In my younger years I would fish for them more than anything else during the warmer months. I've tried all types of baits and the most consistent and productive is oatmeal. It has to be the regular not the instant. Just get a small handful of the dry oatmeal and close your fingers around it as you dip your hand into the water. You flex your fingers enough to let in a small amount of water as you form a dough. It takes a little practice to get the right consistency and you have to use some caution when casting but it works. I tried adding flavoring and different cereals but the oatmeal was always the best. Shredded Wheat worked good but it tended to set-up too hard on the hook. I was never lucky enough to trade carp for beer but would be willing to start fishing for them again if I could.