[Yoda]

In other words, I don't think that the head (or base of the neck) has to be in the center of the stance to fulfill Homer Kelley's definitional requirement of a "stationary head" being a necessary requirement as part of the triad of essential requirements . . .

Nor did Homer Kelley believe that. In his textbook, he emphatically states that the ideal Pivot Hinge Pin falls "precisely between the Feet" (2-H / 7th edition). However, in his recorded teachings, he understood personal preferences and gave the golfer plenty of leeway. He did the same in The Golfing Machine:

"This book presents the 'uncompensated' Stroke as a goal, guide and progress report, not as a minimum entrance test. Compensation for physical limitation, personal preference or special purpose are actually specialized techniques."

-- Homer Kelley (3-A)

His recommendation was to set the Head in an Impact Fix (Section TWO) of the Stroke and then leave it there at least until the end of the Follow-Through (Section ELEVEN). Most golfers ignore this instruction, of course, and take their Adjusted Address (Station THREE) with their Heads set 'any old where'. Then, they have to Bob (Third Snare / 3-F-7-C) -- often significantly (check out Gulbis and Creamer) -- in order to achieve their desired Impact location during the Stroke itself.

I well remember standing directly in front of him in his study in January 1982 as he demonstrated this point. As he moved from a conventional 'head high' address, his bald head dropped at least a couple of inches as he moved into an Impact Fix. It was dramatic difference, so much so that I even snapped a photo.

If he were posting in this thread, I'm sure he would say "Put your head anywhere you want at Fix. Then, leave it there! The important thing is that your pivot has a center and that it moves as little as possible." Just like he told the five of us privileged to be in his Masters Class that day.

This is not news. I have written on the subject many times in the past few years. Search my archives.