This guy don't bob much and he chooses a very different address position to the pros above...much less stiff/upright...head down..foveas looking good etc
No attempt (or at least unsuccessful) to get right forearm on the same plane at impact as address...but right forearm very much on plane at impact.
Some of my thoughts / interpretations put up for bashing around...
Bobbers ...have a sense of right forearm on plane and get their pivots to do whatever they have to do to get it there....as they all start off from an adjusted address which has not had the benefit of a "impact fix" education...they bob...
Mac (my take on his stuff - I know you dabbled in his dark arts too - so see if we agree ) has an adjusted address which has been educated by the impact fix concept... his adjusted address sets head height and neck flexion and spine angle but he does not worry too much about wedges at adjusted address because he sets them early in a manner similar to Joe Dante and Joe Norwood....hmm were Norwood and Dante ever seen in the same room at the same time...
Are there two options for people that use an adjusted address which is not impact address??
Address shaft alignment = impact shaft angle but body dips to get the off plane address right forearm on plane for impact and...
Address shaft alignment lower than impact shaft alignment but the body alignments are same for adj.address and impact...right foream comes on plane for impact as right shoulder lowers and shaft leans forward.
Bash away...
There ain't nothing wrong with setting your Right Forearm On-Plane at Address. Particularly useful with Hitting . . . but I think Mr. Kelley would be less dogmatic about it with Swinging. Now the question to answer is WHY do most cats on tour NOT set their forearm On-Plane? Probably because the don't know anything about the alignment . . .and the may think it looks "different". But that being said most of the great ball strikers DO have the Right Forearm on-plane with the shaft at Impact? Why? I would submit that its because even though they may or may not have a centered pivot . . . they get the Right Shoulder location deal . . . PLUS I think Physics plays a role . . . these guys are swinging the club at speeds that physics are going to produce some of the alignments that we like to see because . . . . well . .. that's the way it works. The forces are so great that they just line everything up when the motion is efficient. I'm mean look at Furyk . . . he's got some MAJOR whacky stuff going on but when he gets down there where the bidness is to be done within certain constraints he's not a whole lot different than some of the other more "conventional" looking swings. Again it comes down to the 3 Functions and controlling the face . . . Furyk is GREAT at that. So for the club to work like it should on plane through the ball . . . the plane is gonna produce some of the alignments because that's how laws of nature make it work.