[MizunoJoe]

"Are you saying then, a clubhead moving at 100mph with no support behind it will not hit the ball as far as a clubhead traveling 100mph with support behind it? Support being - the club attached to a golfer who is maintaining lag pressure thoughout the swing."

The answer is yes, but in a Swing using CF, the amount of support needed is only that from the left hand required to keep the butt of the club from backing up in the Impact Interval. Lag Pressure at PP #3 is only a passive feedback indicating that your Left Wrist is moving fast enough.