I looked at the first part of the PAT system. A free download is mentioned in this post. The introduction says it is a system to assess skills. Another paragraph says it is model for training programs. In reference to what Scott Lee says, in another paragraph it says under the guidance of their trainer start with the exercises using the book as a guide. The creators of the PAT system, if I understand it, are saying get a coach, teaching pro, or whomever will work with you and have them teach you the correct way to stroke. The skills in the PAT system are the drills you use to practice. If you work with someone like Scott he will help you develop a consistent reliable stroke. You can use the PAT sytem to practice and reinforce that stroke.