A ball rolling on the green is predictable - where it is going and how far. A ball with backspin, top spin, hopping, and skidding is not.How do we know if our putts are rolling or not? Use the SloMo Screen, the MyRoll ball, and your smart phone slo-mo video. Watch the exact roll - or not - of the putt. Make the adjustment with shaft lean or ball position. Maybe stop flipping at the bottom. Hit another putt on the SloMo Screen and celebrate!