Lee i assume the venue is a stillwater, get this months issue of angling star and look at Lee Swords rig on page 3 but inject the worms head with air ,very carefully as if you inject yourself it can be fatal ,then place ashot on your hook length bb should be ok ,the shot should be near enough to the worm so its tail is on the lake bed and the head floats just off bottom ,hook the worm so the point of the hook is pointing at the lake bed , drop the rig in margin to test. this rig works with perch with either semi fixed weight or feeder so the aggresive carp should be a doddle. do yourself a favour and buy worm juice ,fill feeder with cotton wool and soak in juice no additional bait needed works for me.