I chummed with cream corn one time and it worked well. Nice thing about corn for bait is that commons and grass carp will both eat it, I highly recommend chumming with something, because especially with grass carp, when they are feeding naturally they won't eat corn much, but once they see it everywhere, they start feeding on it and become comfortable taking the stuff with hooks in it. Just use #6 or #8 hooks, light leaders, and sliding weights or no weight at all.