[lagster]

IMO Hardy's so called 'one plane vs two plane' book is 'actually' not about plane at all, but a quite solid description of the differences between spine angle/tilt at address and the resulting swings/compensations they each require.

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I agree... Mr. Hardy's book is not really dealing with shaft plane.

I believe he said Freddy Couples is actually a One Planer(by his definition), with a flying elbow. I believe he says someone like Davis Love would be a Two Planer.

He is looking a golf swing in a different way... than most have recently, it seems to me. Some of the information looks pretty good.