N8ly, the problem with using crappie, in my opinion, is that there are too many questions with them when there are better fish available for forage. Even if all crappie over 6 inches are removed, the crappie left will still just be more predators in a pond that's already predator heavy. They'll be eating the same thing as smalll bass and yellow perch would be. Also, since crappie have a reputation of being inconsistent spawners and there would be no large brood fish, what happens when there are 2 or 3 consecutive years of failed spawns? If there were already crappie in the pond, taking this approach may be worth a shot but I think adding them now would be a shot in the dark. Since yellow perch are already present I think they would be a better option for establishing a forage base as they can be utilized by both species of bass and the walleye. Bluegill or large golden shiners would be a much better option, in my opinion.