i'm not sure what the other fellas think, but it would probably be a good idea to do it again in spring after the spawn when they are chock full o eggs. if you or your buddy went out and caught/bought five or six walleye to put in with the crappie then you shoudl be in good shape in terms of keeping teh body of water overrun. that is what they have done in most of the "healthy" ponds with crappie in them in millstadt and it worked great. just don't take the walleye out because they will not reproduce, but they will live a nice long time and eat a ton of the crappie fry. i'm assuming both of these ponds are strip pits (god i love that area!) so they can maintain really nice crappie populations. somebody caught a 3.5 pounder out of one of those 3 club ponds in millstadt i was telling you about.
"We abuse land because we regard it as a commodity belonging to us. When we see land as a community to which we belong, we may begin to use it with love and respect"
-Aldo Leopold