[MizunoJoe]

I always enjoy reading your posts, Daryl. They make me think.

Hogan lowered his head towards and through impact. Luke Donald raises his head through impact. I'm thinking that the guy who dips his head is pushing more and the other is pulling more.... and that the guy who is pulling more will get both ends of the club on the same plane sooner. Eventually even Hogan was pulling 100% but that was (I think) way after impact.

A little thinking will show that the only part of the club that can be on plane in the Impact Interval is the Sweetspot, while the shaft is below the plane.

Your examples are the opposite of what you think. Hogan is pulling from release all the way to his anatomical limit at the finish, while Donald is throwing the arms/club through Impact with his Right Shoulder.