One of the simplest and quickest ways to add more food is by stocking an additional forage fish that spawns heavily and does not outgrow the size range that the average bass can eat. Threadfin shad have proved to be excellent supplemental forage when stocked in private fertile waters.
The small bass may be small because there is not enough food available for them to grow. And there is not enough food for growth because there are too many of the same-size fish, all eating the same size prey.