It’s all due to the way the body is built to move and, from where I can see things at the moment, there is a direct link between having a flat or low trailing heel at impact versus one that is higher and whether or not your head shifts on the back pivot.
The real issue here, is that we all know (or many of us do) that a steady head promotes better accuracy, so those who play golf for score will prefer to have that.
There is also the question of power production and leverage, and is some degree of head shift occurs during the swing, where do you draw the line between acceptable and too much, thereby interfering with accuracy and consistency?
I’ve been conducting some experiments with throwing, since the throwing motion of the trailing arm has the same action as in the MCS Golf Swing, and that was where I discovered the correlation between head movement and trailing leg (and heel) action in the down swing.
Not only that, I duplicated the head motion of Mike Dunaway’s “stickman” swing from a right-biased position, showing that even with a very right-biased position, you can get some head shift with a certain motion and weight transfer:
Just as with Dunaway’s swing in the gif., I got a small shift to the right and then the head remained more or less in that position, with a slight drop:
I have a little more looking into things to do before I begin to lay it all out for you, but do not worry about confusion – the way the MCS model is currently, has nothing mechanically incorrect about it, or even something that isn’t “optimal.”
Right now, it seems to me that this issue is nothing more than being able to add an “extra gear,” as it were, to the existing model, and that brings us right back to the old days of the Austin/Dunaway assertion that there was a swing with little or no head shift to maximum accuracy, and then the motion with a head shift for maximum power.
The difference, of course, is in the setup and the degree of head shift, as you can see that with Dunaway’s “stickman” swing and my throwing motion, there is not a huge or significant shift, just a slight one.
Another big difference is in exactly how you perform one pivot and down swing over the other. It’s not just “slight shift vs no shift,” of course there’s more to it.
The how and why, I will be able to explain when I have finished looking into it!
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