Yes, i think that you have a point... if educated hands is the sole issue in golf then taking the pivot out has a part to play...but much of eductaion is situation dependent... hands educated in a pivot free environment need not remember evrything in a pivot power world... maybe...
Hand education must be about lag sensation as well as alignments ( the left wrist is flat because the right wrist is bent... because there is lag pressure)
Zero pivot swing gives minimum lag sensation in my experience.... you can't sustain something you barely know is there...
And i have watched many swinging chip videos and hip move... i am waiting for a demo of zero pivot swing basic motion.... hips frozen...
Read my first post on this thread ( page 1 somewhere) and i was really trying to make zero pivot do the job... just failed i guess... will try again someday...
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I dont know if hand education in stage 1 must be about lag sensation. I can think of educating the hands to keep the structure of the wedges.....
One more thing, I have been a flipper so I know what you are going through. THE thing that made me progress was monitoring the hands...... I even hit chips by just looking at the hands, to make sure of keeping the structure intact. Then keeping my eyes closed, to get the right feel of it.
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Golf is an impossible game with impossible tools - Winston Churchill