Had the same experience as riverscum. Made a comment in response to someone seeing my son and I catching a bunch to go back a couple days later to see 10-12 boats fishing for crappie on a small lake I had never seen more than 1 or 2 boats doing so before that. No more details from me, learned my lesson. Funny thing was we never seen one fish caught by anyone in those boats but were catching our share again, just on the opposite side of the lake. Too many people too lazy to do the work to figure out the fish.
Keep them poles bent and the boat right side up! LOL