Most of the fish I am catching right now are doing one of three things.
(1) waiting for feeding time...to feed right now they have to go out and chase the roaming shad schools or pick an ambush point where they may swim by close. If they are not actively feeding they are holding near on structure on the main lake or just inside a cove or creek arm that has quick access and a short swim to the schools of shad.They will bite but you need to get it close to them and entice them a little with just the right thing.
(2) Following close to or below the shad schools roaming...sometimes hard to catch at this stage...they are preparing to feed but not quite ready.
(3) Herding the shad toward shallower water on a mid lake hump or drop off,grass bed,etc. where they can rush them and have a better chance of catching them then open deep water. Now's the best time to catch them. Throw into the shad with something that matches them and don't fish to slow...you want to look like one of the shad escaping. I just cast and reel with a shad profile jig.

In some places it will be mostly crappie in the chase....others it will be bass ,bluegill , crappie and other species all working it...you can't help but catch them all if your bait looks right.

Even though the fish are frenzy feeding more or less at times you still have to throw the right thing. Wrong profile or color and you may catch some but most will snub their nose at it. You want to fool them...it looks enough like what they are chasing and they won't take time to eyeball it...they will just grab it before it has a chance to get away like the shad.