Funny Gallop, I was thinking the same thing. It took me two days to put out 18 tons but I didn't have heavy equipment.

The LMB should bite just about anything if they're out of food; the definition of overpopulated. I've only caught crappie in the winter so I don't know about those guys. I'm sure your shocker guy knows his stuff but what did he base his overpopulation estimates on? Were the LMB skinny or just plentiful? What was the distribution of size? Could the poor catch numbers be the fishermen's fault? Might try Rotenone to thin out the two. The lake might be big enough that you could get away with nuking a portion. Check with someone else first but I think the big ones will be the first to go with Rotenone and thus you could use a dose that isn't lethal to everyone. Those are the ones you want to get rid of; the ones that are too big to be predated and are also responsible for the bulk of the spawn. I've seen peoplpe use big tarps to isolate the poison. If you did this, you could hit the cooler water spots during the summer months where crappie are said to inhabit.

What sort of forage is available to the crappie? I'm thinking the crappie would need to be kept in check (harvest the biggens) and you need to make sure the bream aren't out of food. It might take a large hit to the crappie population and an immediate dose of bream to 'turn the tables'.

Assuming enough bream food is available, another forage species for the bass would help the juvenile bream survive to adulthood. Golden shiners are my favorite since they grow big and basically never outgrow predation. Grass shrimp and crawfish are also great forage for everyone if you have the habitat to support them.