Head Movement
 

Mike, The pictures in Trolios book, taken from the video
In Persuit of Perfection by Darracott, Shows that the head
moves down but not left during the Hogan move. The pictures
indicate that the head moved forward, maybe one or two inches,
from the top to follow through and then forward to finish.
You being a master student of the game, I think that you would
enjoy "The Final Mission Piece" by Trolio. It is a masterpiece.

Noggin Central
 

I am starting to have some fun! Mike Big "O" makes a good distinction between a centered/stationary head and a stationary head (if I read it right.) I played for along time with the head over my right knee. It was explained that this was normal and correct...ya know as a result of the right arm being lower than the right etc. I did a pretty good job at keeping it stationary...but I was hitched to the wrong post! A centered AND stationary head produces a more efficient move (based on a lack of the same!) I find this helps govern the pace of my swing...if you cannot make a "quiet move" you are proably substituting effort for technique! I probably do move a bit, but the more I minimize an unruly pivot the crisper I hit it! I am no longer sympathetic to pivoting around somewhere in between my shoulders.

You're right - I need to read the book- sounds like a good read from all the comments.