The Kingdom of Shiva Irons – Michael Murphy's book
“When I met him in 1994, Ziparelli had memorized much of Kelley’s book, The Golfing Machine, its Construction, Operation, and Adjustment, and frequently quoted from it at length. Here is a passage he recited to me in Moscow, with reference to diagrams in Kelley’s book without which one cannot understand the Star System:
The hand relationship is invariably established at impact fix(7- with
1. the left arm and clubshaft in-line (4-D, 6-B-3-0-1)
2. the right forearm “on plane” (7-3, 6-B-3-0-1)
3. the back of the flat left wrist and the lag pressure points (6-C-2-0) both facing down the angle of approach (2-J-3). Otherwise, per 7-3, both must face down the right forearm impact fix Alignment (alternate target line) regardless of the turn angle of approach (2-J-3, 7-5).”
It is from Page 194 of the book. The guy Ziparelli is called Horace Ziparelli or Horace Zipper. There is a great "story" of TGM from page 193 to 212 of the book!
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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!