the margins are great spots as they are full of natural food which attracts the fish and u can accurately bait up the margins.
try different size hook bait. also try single baits (without pva bags or any bait around them) the carp see single bait as freebie and hoover them up.
i tend to cast every 2-3 hours, your bait will fade and loose its flavourings but the fish take them as they seem safe.
i find that natural bait such as maize and hemp are great for catching carp, sometimes the simplest bait work!
