Fat that sounds like what my sons football coach told his defense the other day at a scrimmage. The other team had this running back that is VERY fast. Gave us fits the first series. After letting the defensive unit have it with what they did wrong he calmed down and said, "If we hit him hard enough, he will slow down because of the fear!" They went out next series and someone flattened him as he tried to run out of bounds. All the parents just groaned. He was slow to get up and from that point on he ran very cautiously!!!!! So controlled and legal violence can be very effective!!
Randy