1) Hinge Action Education
Per 2-G: "For a Practice drill, Educate the Left Hand (5-0) to reproduce - with Zero Pivot - the three Hinge Actions, distinct and separate, while swinging continuously back and forth. First without a Club, then with a short Club, then with both Hands. Then with increasing Pivot motion using the Right Forearm per 7-19. Learning only one Action isn't so helpful because you won't know their differences.