As a follow-up to this, the chain pickerel experiment was a success. Put about 7 adult size CP in the pond...now it seems there are about 17,000 in there. We are having to remove them now to keep their numbers in check. Apparently they reproduce well in shallow, weedy small ponds. I think the bass are having a hard time controlling their numbers due to the vegetation in the pond. They are fun to catch though and add some nice diversity when the bass are not cooperative.