Geoff Mangum 's PuttingZone Coaches offer the best putting instruction in the history of golf .
Geoff Mangum 's PuttingZone Coaches participate in a world - wide community of putting teachers and learners whose interactions keep this group perpetually at the forefront of golf instruction .
Geoff Mangum 's PuttingZone Coaches offer the best putting instruction in the history of golf and participate in a world - wide community of putting teachers and learners whose interactions keep this group perpetually at the forefront of golf instruction .