Hogan on arc of approach . . . shifting ball around on the arc to hit different shapes and trajectories but keeping the arc. . . . also SHOULDERS CONTROL PLANE OF THE ARMS . . . great illustration.
Thanks for posting up.
Burley was ahead of his time on that diagram. It reminds me a lot of Plummer & Bennett's teaching of the point of tangency, as well as Luther BlackLock's radial system. Burley has a lot to offer, and I hope he sticks with TGM and LBG, the only way to fly!
Kevin
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I could be wrong. I have been before, and will be again.