I know this is up for debate, but let's for the sake of this thread just assume that bluegill is worthless for flathead bait, because for me, at least around the central Kansas area, they are just that...worthless. In 30+ years of fishing with live bait, almost exclusively, anything from worms, leaches, carp, bullhead, crappie, bass, pumpkin seeds, sunfish, shad, crawdads, minnows, you name it, I can probably count the flatheads I have caught on bluegill (lumping all perch other than "black perch" or "green sunfish" in the the bluegill catagory) on one hand, and still have enough fingers left to grasp a cold one. Honestly, I can't think of more than two, ever. I think it is just this area, or at least the waters I fish, just can't get a flathead to eat them around here. Over the years of gathering bait, I have spent countless hours chasing black perch from ponds, drainage ditches, borrow pits along highways, culverts alont county roads, you name it. The one thing I have found is that bluegill inhabit all the same waters as the more appealing black perch. Now to the point, I have access to one pond by my home town that in over 25 years of catching perch for bait, I have NEVER caught a bluegill, or anything other than black perch, and an ocassional bullhead. I can go to this pond on ANY given day, and catch 50 or more black perch in 30 minutes or less, with less than 3 worms, it is that good. My question is, what the heck makes this pond so special, or different, that it can hold all these black perch, but not a single bluegill??:confused2: It is so small you can fish the entire pond without taking more than 5 steps in any direction. My brother and I throw a grass carp in it ever few years to keep the moss down. It is hardly 4 feet deep at the deepest place, and quite stagnant. I just don't get it. I am planning on digging a small pond at my house, that I want to make a bait pond exclusively, but want to create a bait haven such as this pond has been, without the darn bluegills getting in there and taking over. Anyone have any ideas how to create such a pond?