[BerntR]

I think that the Club needs to stay On Plane during the impact interval.

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.