Saying "Main lake" is very broad, but i understand not doing the same thing if its not working.. which we did, and we got different results. We've had plenty of nights over the last few years where we limited out on crappie and threw back 100+ shorts so i know those spots can be productive and it's hard to move very far away from what has worked in the past. I think our next trip we are actually going to go shallower, so we'll see what happens