what do you mean? I use a lot of gimmicks and tricks to teach pitching and hitting and I am certified.
I was certified by Dave Pierce in 1992 back when Indiana softball was in it's infancy.
Dave Pierce at the time was the #1 coach in the world. He as a record of two gold and one silver medals in three major International tournaments. He was the author of the manual that I had to study to get certified. He led the Canada's Men's
National Softball Team to more medals than any other Canadian coach in history.