A bigger profile bait usually helps me. I have been in some tournaments where I tried to go through about 30 or 40 small fish trying to get a bigger fish or even a keeper. It is hard to make up your mind to move on when you are catching fish on every or every other cast, but I have had to do it before. A bigger profile bait will help in most cases, because alot of times the smaller fish in the school are the most active, and the bait never makes it to the larger ones. If I am fishing a jig, sometimes you just need to bump up the trailer size, maybe even double it. When fishing a worm, sometimes I go to a 10, 12 or even 14 inch worm. Smaller fish may peck at it, sometimes take it, but a larger fish will enhale it, most of my fish on a 12 or 14" worm are keepers. When all else fails, you may need to move and if that doesn't work out, you can always come back. I have fished days on Ky lake where I have caught 70-100 fish with only one keeper - then there are days where you are culling within an hour or two. However, I would take any of that over a one or two bite day (unless it is a 7 pounder).