My DD started lessons with a PC (that a local college pitcher recommended) yesterday. Through this site and youtube, I've gotten her to a decent starting point. This particular PC says he learned from someone who worked with Cat. So, he teaches everything that Cat Osterman does. I just went to her videos and it seems as if the style that she teaches is different than IR...more of a HE style. I'm sure I'm off on my thoughts...but, it's hard for me to visualize someone doing IR with the wrist snap that she's doing.