I would have him grip down on the shaft of a mid-iron and secure the grip to the inside of the left forearm with a velcro strap. Have him hit pitch shots with the pivot only, making sure he doesn't push with the right tricep. After he gets the hang of it, have him hit little pitch shots off the ground with a driver, gripping it normally.
Cool. The strap thing would be pretty much intensive therapy. Why hitting driver pitches of the deck? I like the sound of this one. I'm gonna try that.
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