Fulcrum of the grip
 

During the point in time when the clubhead overtakes the hands (finish swivel?), what is the fulcrum? PP1 or PP2?

It is actually still the left shoulder unless you have throw away IMO. That said, PP1 is what you would see visually as the shaft and left arm move back into alignment.

For clarification, you're saying that the shaft "pivots" at the location of pp1, instead of at the butt of the club, correct?

IMO it is THE HANDS-but why the question?:confused1

I agree it's the hands. What I mean is, what is the point that they rotate around. I could show this better than type it, but I don't have the resources. As for why I ask: I don't get to hit many balls, or play many rounds, because of commitments that currently tie up my time and money. So I do a lot of non-ball drills, and make a lot of small air swings without a club. This question just popped up during one of those times; during the swivel, what is the pivot point of the hands?

To the extent that the butt of the club must lead the 'chain', yes. From this perspective, you can learn to control lag better. PP1 is a keystone of support for impact. Both sides of the triangle intersect it.

Ok. Thanks, Ed.