hi all ,
silt is the home of all those lovely grubs bloodworm ect ect.
when i fish in silty areas i tend to incresses the lenght of my rig to about 12 ", to avoid the lead pulling your rig in to the silt, some riser fome to slowdown the decent of the bait.
you coud try one of those flat style leads .
try using a chod rig with the bead further up the leader.