Most of the time when your black crappie are overpopulated like that they are also hungry, a couple guys on a mission could make a heck of a dent in your population, if they are big enough to filet at all you will have some really good eating, once you find the main spots where they hang out and what color slider they hit best you can slay em,
when they go on a spawn, me and my side kick have pulled 100 off of a brush pile in very little over an hr if that long.
Neighbor has a 3 acre lake that gets over populated with white crappie every several yrs because he doesnt fish them out regularly enough, we have pulled 450 out of it in a few weeks time in the spring, because his lake gets overgrown with duckweed in the summer, cant fish it at all during the summer.
Good Luck!
