If you mean the putter pal then the answer is its very reliable . But also learn how to use the avatar movements . Go to Bethpage hole #2 and get on the green and learn how to putt using the avatar . Each movement will equal so many feet depending on the green speed . Do this in practice stroke play setting and use the free ball and the mulligan . Then putt each scale of your putter 15 , 30 ,60 , and so forth .
Once you learn how to putt this way you will be more precise with your putts . You have one of the best putters in the pro shop and it putts very well using this method . Hope this helps .