How to Fish on Silt, Mud, Clay, and Sand

It can be tempting to cast out your marker set-up and pull it back until you feel some bumpy gravel and choose to fish on that, but is that really the best type of spot to be targeting?

Carp do of course feed on and get caught from gravel areas, especially pea shingle type gravel, and it often coincides with where features are that the fish use to patrol, such as bars, humps, and plateaux, as well as the margin shelves.

But often the natural food is in more plentiful supply in the silt, mud, clay, or sand which surrounds these gravel areas, and fishing on that, adjacent to the actual gravel feature, and where the bottom changes – being just off of the gravel can be incredibly effective.

These types of features naturally attract carp and they almost use them like roadways, but they don’t necessarily feed right on them, especially if food is in more plentiful supply nearby off to the side of these bars, humps, and plateaux.

There are of course plenty of spots elsewhere in the lake as well, away from these obvious features, and these will be things like areas of firmer or cleaner silt in amongst thicker smelly stuff which sometimes has dead leaves or weed in it; or small clay, mud, or sand patches in areas where all of the surrounding area is soft; or on a lake that mostly has a gravel bottom, a pocket of silt can be full of natural food like bloodworm.

How to Find Silt, Mud, Clay and Sand Spots

Like with any type of feature finding, the best way to learn how to do it is to actually get out there with a marker float set-up and learn yourself.

Whilst I could spend lots of words describing in great depth how a particular type of spot feels to me, actually feeling that for yourself is much better, and the more you do it, the more you will be able to interpret what you are feeling and what it means.

You will need some sort of braided main line, as that allows far more feel than mono, plus a rod with a stiff enough tip that the vibrations through the braid are actually transferred to you via the rod – a soft rod tip means a lot of those vibrations will actually be absorbed.

Something that many anglers don’t even think about is the type of lead that they are using and how much impact that can have on what they are feeling.

Something like a distance shape will easily pull along the bottom, especially if it is a coated lead, and through or over some types of debris, hardly catching on it at all. That can give the impression that the lakebed is far cleaner and harder than it might actually be.

There are leads specifically designed for feature finding and which give far more feel and feedback, such as the Probe Marker leads, which feature lobes on them, whilst maintaining a streamlined shape, and meaning that they give more vibration and feedback, but can still be pulled through weed and debris without getting completely snarled up in it all the time – once a lead has weed or leaves around it, you aren’t going to feel anything and may as well just wind in, remove the debris, and have another cast.

Once you have located an interesting area, the Grapple Lead is brilliant for exploring it further and seeing just how clean and hard it really is. This lead looks like the sort of thing you’d use for sea fishing, with short wires sticking out of the sides of it, and unless the bottom is really clear, you will feel plenty of resistance as you try to pull it along the lakebed. It will also pick up pieces of weed and leaves, and some of that will stay on when you wind in – unless it gets caught in anything thicker, then the wires are designed to release and point back in the other direction to free the lead.

This pretty much replaces something that some anglers used to do, where they’d attach a short piece of line and a hook to their marker lead, to get an idea if it still pulled along the bottom so freely or picked up things such as lovely fresh silkweed – these Grapple leads will also bring in bits of that for you to inspect. That may even mean that you end up bringing in fresh bloodworm and that is a great indicator of where the carp might be feeding – especially if you subsequently fish that spot and are also fairly regularly winding in with bloodworm on your end tackle as well.

Purpose-designed marker leads tend to be uncoated, as that not only gives a bit more feel, but it also means that they get scratched on gravel and can show just how rough the spot is that you’re fishing on – the speed of the lead hitting stones on the bottom can take gouges out of it.

These scratches are very useful – some anglers actually add them by rubbing the lead on a stone or similar – as when cast into clay or firm mud, some of that will often get left in the scratch, or even just stick to the uncoated lead, and when you wind in you can sometimes see these clay deposits and know exactly what you’re fishing on – especially on venues where clay spots aren’t common but are great areas to catch fish from.

You also need to ensure that your marker float is set up properly – assuming you are using one and not just leading around – so that it will actually pop-up when you do find a spot. This means making sure it is buoyant enough for the range you’re fishing at, plus any additional weather issues such as undertow.

You also need to ensure that your line can run freely through the lead link, and if that is buried in thick silt, then the line can’t pass through it freely and your float won’t pop-up, so in some instances it may be necessary to use a longer lead link.

So, you do need to think about what you are going to use to find these spots, as the right kit will actually make that job much easier, or even mean you can find spots that you might not otherwise have felt, if you hadn’t thought about things in more depth.

What Does Silt, Mud, Clay and Sand Feel Like With a Marker Set-up?

Gravel has a very distinctive feel when you encounter it with a feature finding rod, and is something which most anglers almost instantly learn to recognise.

Other types of lake beds also have a very distinctive feel to them as well though, even if it maybe isn’t quite as obvious as a gravel spot, and with practice you can generally have a very good idea of what you are fishing on – although if you actually went out in a boat to look at the area from above, it would likely be very different to how you actually envisage it!

Sand, and even clay and very firm mud, can still often produce a solid ‘donk’ when your lead hits the bottom, although it will be subtly different to gravel in terms of it feeling definitive, but not quite feeling like your lead has landed on concrete!

All three can also feel incredibly smooth when you pull your lead back, almost as if it has been cut off, it moves that easily and slides along the bottom – hence why anglers often say the spot feels like glass.

The difference will be though, that when you cast to the spot, unlike sand where the lead should be easy to get moving with minimal pressure from your rod tip, if it has instead landed on clay or mud, then the lead has a tendency to plug into the bottom and it can take a fair amount of pressure to free it, before it then starts to slide easily.

When it comes to silt, your lead will always plug into that and you will be pulling it through the silt to at least some degree, rather than across the top of it. The thickness and viscosity of the silt will determine how easily it will unplug, and also how easily the lead will move through it.

If the lead feels really heavy, then you are likely pulling it through thick silt, possibly mixed in with leaves and bits of dead weed, and if it suddenly starts to move a lot more easily but there is still some resistance, then you have found an area of thinner, firmer silt. Maybe even covering gravel or clay, and which the carp will clean off if they feed on that spot.

The skill is often in being able to determine where the make-up of the lakebed changes and in identifying smaller areas that are different. Where you have vast areas of lakebed that all feel the same, then you don’t have much to go on in terms of where amongst all of that you should fish your rigs, unless of course you’ve seen signs of carp such as jumping and bubbling.

So, anything that feels different, in a good way, is worth investigating further, and in some cases the difference you are feeling is actually as a result of the carp already feeding there naturally. For instance you might find an area where the silt is thinner, then as you fish the spot more and catch from it, you start to feel the odd bump of gravel where the fish have cleaned all the silt off of it.

This means that even when fishing the same spots regularly, and having them all marked out in terms of the number of wraps and a far bank marker – there is no point finding a good spot if you can’t put a rig back on it again! – you still need to check the spot at the start of the session (or possibly even as the session progresses) to see how it is changing, and indeed, whether it is still as attractive to carp as it was initially, especially if it appears like they may have eaten all the natural food.

There will also be times when you see carp bubbling and showing like mad all over an area that is thick silt with debris and not interesting or a spot you’d normally want to fish – this sometimes happens in the autumn – but often this is due to natural food, and you definitely shouldn’t ignore it just because where they are showing might not feel very nice – just adapt your rigs and tactics to allow you to fish those areas effectively, such as using chod rigs.

How to Camouflage Your End Tackle on Different Lakebeds

Because all of the different types of spots we’ve looked at here will be different, it also means that you should pay attention to your end tackle and how well that blends in.

Something that might be almost invisible on one type of lakebed, can be incredibly obvious on another and potentially either stop the fish from feeding there, or make them more wary when they do.

Even if we just consider colour and continuous unbroken lines – which don’t tend to occur in nature – we can see that would have to be different to blend in with gravel versus clay, and on silt you have the advantage that some of your end tackle will sink into the surface film of the silt anyway and be covered.

That is why carp fishing terminal tackle comes in a variety of different colours for specific lake beds – things such as lead systems and hook link materials are a prime example – and you can just choose the variety that best blends in with what you are fishing on.

That also applies to rig tubing, leadcore, and even fused leaders – which often come in colour varieties such as clear, weed, gravel etc – which can be matched more closely to the lakebed colour, which can be very important given that to the carp these things can appear as a continuous straight line, which is viewed as potential danger. There is of course also the option to use fluorocarbon, but whilst this might be almost invisible in water, that isn’t always the case on the bottom.

So, making an effort to use the right colour and type of end tackle can make a real difference in some circumstances, and especially with wary carp.

How to Choose a Lead System for Different Lakebeds

That brings us nicely onto lead systems themselves, and how important it is to choose a suitable type for the strata that you are going to be fishing on.

That not only matters in terms of presentation, but also how effective the hooking efficiency of your chosen set-up ends up being – what is perfect for one situation, can be awful and ineffective on a different type of spot.

The type of lakebed isn’t the only factor here, and a lot will also depend on weed and snags, and how quickly you need to drop the lead in order to be able to give yourself a good chance of landing a carp.

On sand and hard bottom you won’t get better than an inline or COG lead in terms of hooking efficiency, it depends how easily you can actually fish that on the spot, given limitations such as casting distance.

But casting the same set-up into thick silt – or even clay, as you can imagine that the nose of the lead will bury into the bottom - isn’t going to leave your rig presented very well, especially with a stiff hook link.

Conversely, a Heli-Safe style helicopter set-up is great for presentation where the lakebed is soft and the lead is likely to bury into it, but the same thing on clean hard bottom is awful because of the amount of distance a fish can move before it even feels the lead.

Lead clips are a bit more of an all-rounder, but you still need to think carefully about how you are using them and what your presentation will actually look like.

So never just chuck out a lead system because it happens to be what was already on your rods, always try and consider why you are using it, and what benefits it is actually giving you versus alternatives.

How Do I Choose the Right Rig for Different Lakebeds?

There is no one specific rig that is ideal in every situation where you encounter sand - or any other specific bottom strata - as there are so many other variables.

Your choice of hookbait will of course also play a big part, and there might be times when you want a pop-up over a hard bottom, and others where you want it hard on the deck and behaving like your freebies.

Whatever type of lakebed it is though, you need to balance the hooking efficiency of your rig with the way that it is presented – there is little point having a rig that is incredibly effective at hooking a carp, yet presents so badly in some situations that it is never going to be eaten by a carp in the first place.

So, you do need to consider how your rig interacts with not only your lead system, but also the bottom it is being fished on, and this is why you see so many different variations of the popular rigs, as in many cases those tweaks have been made so as to make it effective in certain situations.

A reverse combi rig is one such example, where using a soft section by the lead actually allows the rig to sit properly, without the stiff boom sticking up and being obvious to the fish, and that could work in that way equally as well on lumpy gravel where you can’t be sure how your rig will land, or just as easily on a bottom where the lead plugs in slightly and the soft braid section still allows the rig to lie flat on the bottom.

There are of course also some rigs that were specifically designed for certain situations, and that definitely includes the chod rig, which was originally popularised by anglers like Frank Warwick over 30 years ago when they were fishing the silty Cheshire meres and wanted a presentation where their rig wouldn’t sink too far into the bottom. That was subsequently adapted for fishing over weed or any other debris, and with very short hook links and pop-ups fished straight off the swivel, whereas the original version was more like a paternoster rig with a conventional hook link, just one that was designed not to be pulled so far into the silt by the lead.

So do think carefully about your choice of rig and what sort of presentation you will likely be getting on the spot that you’ve chosen, and whether there might be an alternative that presents better, has better hooking mechanics, or even both in specific situations.

How Do Natural Food and Baiting Affect Carp Fishing?

The way you bait and the type of bait that you use will affect how the carp are feeding and can change how they would do, compared to if they were eating naturally occurring food from these spots rather than an anglers bait.

On a clean hard bottom, your best chance of a take is generally when the carp are moving inbetween each mouthful, so that when they do pick your hookbait up they hopefully tighten the hook link, feel the lead, and get hooked very quickly.

Certainly baits such as hemp can do exactly the opposite where they move along very slowly, with their mouth against the bottom, hoovering, and in this situation there is a good chance they could spit your rig out before the hook link has even tightened.

Even the type of a specific bait can make a difference, with boilies being a good example when fishing in the silt.

Some types of boilies will absorb the smell of the surrounding silt far more quickly than others, and if you want them to stand out against the background smell and for carp to be able to find them more easily – especially if buried in the silt – the longer the smell of the boilies remains intact, the better. Fishmeal boilies for instance can come back absolutely stinking if they have been in certain types of silt for any length of time.

It is also worth bearing in mind that some of these spots will already have a larder of natural food present anyway, and your problem might not be making your bait stand out and be fished in such a way that the carp eat it because they don’t view it as dangerous, but actually getting them to eat any sort of anglers bait if they are pre-occupied on natural food such as bloodworm or snails.

So rather than just focussing on using your favourite carp bait whatever sort of spot you’re fishing, do put more thought into it, including what the carp might be eating naturally and whether you maybe need to try mimicking that either in terms of hookbait size and buoyancy, or by actually using a natural bait such as maggots.

Fishing on Silt, Clay, Mud, and Sand: Quick Questions

How do you find good spots in silt when carp fishing?

Use a marker float set-up or lead around with braided main line to find areas where the lakebed changes. Look for firmer or cleaner silt amongst thicker silt, small patches of clay, mud or sand, or areas where silt meets gravel. These changes can be particularly productive because they may contain natural food and can be areas where carp feed regularly.

What does silt feel like when feature finding for carp?

Silt usually feels different from gravel because the lead tends to plug into it and you pull it through the silt rather than across the surface. Thick silt can make the lead feel very heavy, while thinner, firmer silt can allow it to move more easily but still with some resistance. The thickness and consistency of the silt will affect how the lead feels.

What does clay feel like with a marker lead?

Clay can produce a solid donk when the lead hits the bottom and can feel very smooth when the lead is pulled back. Unlike sand, however, the lead can plug into clay and require a fair amount of pressure to free it before it starts sliding easily. Uncoated marker leads can also pick up clay deposits or retain clay in scratches, helping to identify the lakebed.

Is silt a good place to fish for carp?

Yes. Silt can contain large amounts of natural food such as bloodworm and other organisms, and carp may feed heavily in these areas. Rather than automatically choosing gravel because it feels harder and cleaner, it can be more productive to find areas of firmer or cleaner silt, particularly where the lakebed changes or where there are signs of carp feeding.

What is the best lead system for fishing on silt?

There is no single lead system that is best for every type of silt. A Heli-Safe style helicopter set-up can be useful where the lead is likely to bury into soft lakebed, because it allows the rig to settle above it. On harder bottoms, an inline or COG lead can provide better hooking efficiency. Weed, snags, casting distance and the way the lead needs to behave should also be considered.

What is the best rig for fishing over silt?

There is no single best rig for every type of silt. The right choice depends on how soft the lakebed is, how the lead system interacts with it, the hookbait being used and the presentation required. A chod rig can be particularly useful over very soft silt or debris because it allows the hookbait to sit above the lakebed rather than becoming buried, while other rigs can be effective on firmer silt.

Should you fish gravel or silt when carp fishing?

You should not automatically choose gravel simply because it is easier to identify with a marker lead. Carp often use gravel bars, humps and plateaux as patrol routes but may feed in the softer lakebed nearby, where natural food can be more plentiful. Areas where gravel meets silt, mud, clay or sand can therefore be particularly worth investigating.

What bait should you use when fishing over silt?

The best bait depends on what the carp are feeding on naturally and how they are feeding. Silt can contain natural food such as bloodworm and snails, so it may sometimes be worth matching the size or buoyancy of the hookbait to that natural food, or using a natural bait such as maggots. When using boilies, some types absorb the smell of the surrounding silt more readily than others, which can affect how noticeable they are to carp.