[Jeff]

12 piece bucket

What you have stated makes a lot of sense - the amount of roll a golfer gets (during the horizontal hinging action) depends on the angle between the clubshaft and left arm (as seen from a DTL view).

Although HK states that the left hand is responsible for controlling the clubface during the hinging action, doesn't the degree of straightening/pronation of the right hand during the followthrough have a major effect on the hinging action.

Consider capture images from the Anthony Kim video.



I get the impression that his right hand is straightening and pronating during the followthrough. Doesn't that right hand action induce horizontal hinging by promoting a roll action during the followthrough period? Isn't that right hand action what Nick Bradley describes as a puck release - see the next photo?



Jeff.