"balling" and "busting" or "driving" and "pounding" are the fishing words for the action of a school of big fishes rounding the little fish (herring or mullet) up (like cattle) until the little fish form into a ball for protection and then the big fishes drive the ball toward an obstacle, like the beach, where the little fishies are ripe for the picking. The striped bass they put in the lake up here exhibit the same behavior - balling their food (shad) up and herding it to where they can get a big mouthful. If you only had a rod and reel with a fake herring on it you could have dropped it into the ball o beseiged minnows and caught the monsters that were responsible and put them on the grill!
warning: contains some pretty graphic descriptions of what is going on
http://www.wayneswords.com/boils.htm