Bluegillkiller: When I was beginning to build my big pond (17 acres or so), a friend tried to convince me to not put any catfish in it. 8 years later, I'm thinking I should have listened. Frankly, I wouldn't stock any. If I did want to stock something like that to cut down on bullheads or green sunfish or for some definite purpose, I think I would stock one blue and one flathead and hope no one else did likewise.
PS: I love Bill's analogy!