Our guest is Phil Kenyon, principal owner of Harold Swash Putting. In our conversation from 2009 Phil talks in detail about all things putting, including how the ball comes off the putter and why C-Groove technology was so revolutionary at the time. Harold Swash (2016 R.I.P.), inventor of C-Groove technology, the main feature of the YES! Putter product line. YES! Putters is no longer in business, but Phil is still teaching putting excellence under the name of Swash Putting at haroldswashputting.co.uk We discuss YES! putters and putter technology.