My local lake (about 3 acres) has Carp, but no matter what I do, they don't
feed in the winter! Boilies and nuts are banned BTW.

Surely sweetcorn over a spod of hemp should produce!

I plumbed, and picked the deepest water. Spodded one spod of Dynamite Baits
hemp and sweetcorn, With a few trout pellets, then put a critically balanced
3 sweetcorn hair as hook bait.

What am I doing wrong?