I'm not buying it. Bonar repeatedly says the only to open the clubface to the top is by cupping the left wrist. (BS) Repeated that a dozen times. Then he says later that you don't have to fan the club open but just cup it. So there is another way to open the clubface, which most of us knew. It is not hard to turn the face ON PLANE to the top and keep a flat left wrist. LESS MOVING PARTS.
Downward- of course. SO simple but few do it. Where's the ball? (Down)
Home run- I use to think he was teaching a Horizontal Hinge but that unflat cupped left wrist is closer to a a swivel into impact leading to a chicken wing. I don't think he does that in his swing he showed at the end- his wrist is flat and doesn't mention it inn the clip. INCOMPLETE
A FLAT LEFT WRIST is the foundation to everything. If you cup at the top you MUST Flatten it before impact. You cannot get out of Hackerville with a cupped left wrist.
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