I have caught 7" crappie on 3" baits. They will hit almost anything. You may do well with the bigger baits but a 2" bait will put some slabs in the box as well. Give it a shot and see how it works out. I have experimented a few times and dont tell a difference in the size fish I catch when using larger baits except for catching more gar, bass, muds, and catfish. They dont hit the 2" baits as much as they do the 3" for some reason from my experience. Im sure others have had a different experience