trying to do that pronation/supination thing through impact + trying to make your left wrist go from cupped to arched during release at the same time.
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Edit: I'd like that DOING that is not necessarily a bad thing. But ACTIVELY TRYING TO definitely is!
Oh Tongzilla are you trying to critique me
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And you can do it if you tackle it correctly.
Once the initial movement sets the club in motion, the clubhead starts to go out of its fixed alignment relative to the adjusted address degree of bend in the left hand inorder to load the no.2 acc. I think it is pretty obvious that the hands have to move in response to the force that is already put into the clubhead during start-up whilst loading.
Whilst this motion is made you allow the clubhead to go into one of two variations - one is where the hand is aligned along the forearm, the other is where the hand is bent by the degree that the left arm bends the wrist into the plane.
So in that context you don't try to do it, you allow the orbiting clubhead to do it for you. However. Im giving you to much credit of thinking of it in this light and chances are your really refering to it as a concept as a whole. Providing you know how to do its a fine variation which someone can try. It doesn't take special co-ordination to do it this way, if I can do it that way anyone can.