I don't think the bullheads have taken over my pond, so to speak. However, I've become anti-bullhead.

Any bull head I catch get's relocated to the bank (and still proceeds to live for sometimes 24 hours or more, as others have commented in other threads). I'll probably do a few of those homemade traps as Dudley Landry has instructed.
And if the other fish are not biting, I'll go to "work" by putting some bait on the bottom and catching and culling bullheads. I don't really have any other type of catfish in my pond except for the ten 10" channels I put in a few months ago.

I do need to improve my "work" ethic though. I've only culled (13) bullheads so far (and 28 crappie). I don't expect to ever get 100% rid of the bullhead though.

Excerpt from Robert Crais' "The Monkey's Raincoat:"
"She took another microscopic bite of her sandwich, then pushed it away. Maybe she absorbed nutrients from her surroundings."