Nothing TGM here( of course I may have overlooked, not out of the fog) but I found my putting improved greatly when I addressed the ball relaxed, stared at the sucker, ala J.N., and the putter started to move back w/o any deliberate intent to start the back swing. Just happens!
A study of about 40 Touring Pros some time ago revealed some interesting results. The intent of the study was to determine who did and did not need glasses, why those needing refused to do so and the actual time each participant needed to actually converge both eyes on the ball and focus.
Results were interesting.
The senior participents actually needed less time to coverge and focus their eyes=4-6 seconds.
I find this standing over the ball relaxed, as w/ putting above, usually gives me the same results when hitting a shot, an almost automatic start of the backstroke.
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