What's wrong with silt? it's where most of the natural food is anyway. You need to locate the areas where the carp are feeding in it. Look for bubblers etc. I've fished lakes where the carp feed in the real heavy stinky chod and other lakes where the lead comes back like it's on glass and you get the bites. Don't get paranoid about fishing above the silt, the carp get their heads right in it. That's where you want a bait, not popped up three inches above it!