I do agree with PG in the idea that a pitching coach should use what the specific pitcher brings to the table. It is for this precise reason my son has never had a formal pitching lesson. I just never found anyone in our small area that I trusted. When he was younger, we had a couple different hitting instructors. The one I always seemed to feel comfortable with was the one that took his natural ability and tried to perfect it. Any instructor that says there is one, cookie-cutter way that everyone should do any particular movement makes me very nervous and uncomfortable. I know there are certain positions that all successful pitchers or hitters must get to, but how they get there should allow for individuality. Not everyone has the same body type, size, etc. We are fortunate that son is very athletic and most sports came to him very easily.