one good way to find baitfish is to go fishing on a windy day. the wind pushes plankton which in turn pushes baitfish to the plankton right behind the baitfish are the bass. you have a tough question to ansewer correctly maybe your best bet is trial and error. theres alot of crankbaits that suspend maybe you could work the water colum from top to bottom with crankbaits feeling the bottom as you go. hope i was of some help