Megan McChrystal and Geoff Mangum teach how to perceive the fall line of the green and the surface slope, with a simple gadget — a piece of string and a tee peg.
Tagged: putt
Geoff Mangum on Reading Putts 1 of 7: Perceiving the Fall Line
Geoff Mangum of the PuttingZone.com describes how to perceive the fall line straight uphill-downhill thru the hole on a flat-but-tilted green surface as one of three keys to predicting the curving path of breaking putts (3 factors for break: slope steepness and direction, green rolling speed, and ball rolling speed).