OK, tried a few things and had some fun with it. Chicken liver, no bites at all. Worms wasn't bad, we got bites and actually landed the biggest bullhead on worms. Interestingly, I got some really good bites on hot dogs, and landed 4 nice cats using hot dogs. For some reason, they seem to hit the dogs hard, really nice strong bites. I still think the water needs to get a bit warmer, and I need to fish in the evenings, we started fishing just before 9am, done by noon. Fun stuff though, and we saw TONS of carp jumping and splashing, still spawning there.