Do any of you use EXTENSOR ACTION in putting? It seems to me to do so would require an extended left arm radius at setup(fix). Most people seem to use some version of 10-3-G(The Pick) when putting. I can think of several players, however, that do have the extended left arm radius. Andy North,and Rex Caldwell ( both tall players), and one very small player from the 70's... Rod Curl. A little more currently... Phil Mickelson, and Ben Crenshaw. Whether or not they are applying Extensor Action, I don't know.
10-B-3-0 pg.71... "Putts are miniaturized Drives(12-0)."