Mark Crossfield has a "million" YouTube videos and an app. No way anyone could do use all the "fixes"; however, his teaching seem to be excellent. If there are a few "tips" to straighten out swing flaws, then he is doing a great job. Personally, I could one video about stopping over the top with concentrating on the movement of the handle really improve my ball striking...with all clubs. My advice: If you find one or two videos really hit home, keep watching them and working on the movements/swing thoughts. Good luck.
