You don't want to give the guy 10 different things to work on. When you diagnose, determine what the most important problem is and stick with that. It's diagnosing the problem. No two students are the same. The key to teaching is communication.
Every student feels and hears things different.
Adding a touring professional or major championship winner like a U.S. Amateur to one's coaching resume also doesn't hurt. Tom Byrum has been with Murphy 10 years and is a regular at the Training Station when he isn't on tour. Royal Oaks' Randy Smith mentored the likes of the young Leonard and Harrison Frazer at the Dallas club. You've done the job if the player's won the championship or improved to become a better player. Dick Harmon and Pelz both acknowledge working with a pro can boost a teacher's reputation to a higher level.