So that you don't waste useful hits on paid for balls. Set your mode to practice and hit the 'Rock' set your practice round to the green speed you need. Use the 'Putt Preview'. align, adjust your %, watch where it rolls. Let your meter run through without swinging re-adjust your read and ding the putt. I hope you track what your doing. Never waste good balls on putting practice but you need to practice! practice! and practice!
Siders Best