can you post pictures of the cat fish. what you should do is just fish fish fish get an idea of how many fish your catching and how big is average. and with a lake that size getting 4-5 different feeders wouldn't probably be a bad idea. I would also recommend getting some sort of bait fish besides bluegills or sunfish. Flat head cat fish are lie in wait predators and like eating little blue gills or bigger minnows try catching some 3-4 in sun fish take a scissors cut most of the tail off and the pectoral fins hook them right behind the the top fin with the spins on the back and cast out with a few split shots and just wait to see if you catch some really big fatheads and if there are big flat head those might be you blue gill and crappie management tool but if you want fish for eating dont be afraid of keeping 5-12 pound cats while flat head eat the pan fish in a bigger size range then bass there will be a prefect management tool to allow pan fish that dont get eaten to be breeders and pan fish for you to eat the small pan fish will be bass food and and 4-5 inchers will be big bass and cat fish food