Use the hands, not body rotation, for clubhead speed
The coach hits two comparison shots: on the first he holds the wrist angle and turns with body rotational speed, and on the second he comes through using just his hands instead of the body. The body-rotation shot carried 121 yards (132 total) and the hands shot carried 136 (149 total), which he says shows the hands and arms are where the speed really comes from.
Channel: stayhandsy
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Coach compares two test shots with launch-monitor carry and total-distance numbers.