[lagster]

Per 1-L-2, the head is allowed to turn (but not sway or bob), but surely this rotation will change the way your eyes look at the ball. Doesn't this make the "eys argument" obsolete, as I do not know of any great golfers who does not turn their head slightly on the backstroke?

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This is true. Most, if not all, tour players have a slight swivel of the head near the TOP or END of their backswing. The head does not necessarily move laterally, but TURNS(rotates) slightly to the right.

Someone that is very RIGHT EYE DOMINANT may have problems with this. What do you think?