Yes, Milan, those would be mirrors. I got the idea from Paul Bertholy, one of the more famous names in golf instruction in those days, when I trained under him during a three-day course at his home. Below is a September 1983 photo of Paul and me in his back yard near Pinehurst, North Carolina. Note the famed Bertholy Swing Bar in my left hand....
Dear Yoda,
Besides of the weighted bar, was that the right hand "claw" of the Bertholy method in the photo?
I spent a long time to read and try to understand the "method" during my long holidays (healing of my elbow). I read Paul preferred the flywheel action over the right arm thrust. Is that similar to TGM spinning the flywheel?
I also found a story that Moe Norman recommended Paul Bertholy to his friends and in return treated the manual as a treasure. Would you share more with us?
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If you cannot take the shoulder down the clubshaft plane, you must take along some other path and add compensations - now, instead of one motion to remember, you wind up with at least two!