I slipped my left arm out of its sleeve and did this little drill during my 2011 PGA Teaching and Coaching Summit presentation. To get the concept and feel of Extensor Action and its right arm participation, try it yourself!
Address
Pinch the Armless Sleeve with your right thumb and forefinger. Make sure you have a nice bend in your right elbow and a nice stretch of the sleeve. (Lefties substitute left for right throughout.)
Top
Use the Right Forearm Takeaway to take the hand to a Top position (Right Shoulder High or beyond). Use only as much Pivot as required: Let your Hands control and imitate what you see! Your palm should be face up to the Plane. Keep that sleeve s-t-r-e-t-c-h-e-d. Let go of the tension -- relax the sleeve -- and notice how "flimsy" your Power Package just became!
Impact
Use your Pivot to deliver your Bent Right Arm deep into Release and Impact. Do NOT simply unbend your right arm from the Top. This is Throwaway!
Follow-Through
The Pivot has done its work. Now, stay Centered and now continue the Delivery with Independent Arm Motion until the Right Arm is completely straight. Remember to drive toward the Baseline of the Plane (and not toward the Target!). This momentum -- once spent -- will pull the Body into its compliant position at the Finish.
When you are able to perform this drill correctly without thinking -- shouldn't take long -- you are well on the way to the next level of your best golf.
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