I am very much in favor of the idea of lag existing throughout the swing system - for a pivot-driven swing.
I am only questioning the belief that the presence of lag will decrease clubhead deceleration during impact. It is my belief that the clubhead will decelerate to the same degree as a result of ball collision - whether there is lag at impact, or not (presuming the same clubhead speed at impact and the same ball-clubface contact conditions).
I also believe that lag mainly applies to the relationship between the clubshaft and the left arm, which means that the swing radius ends at the left shoulder socket. The concept of "lag" extending to the feet may be a useful idea in a pivot-driven swing, but doesn't apply to a left arm swinger.
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