I have been scratching my head with (example) 0.0 spin on ball with a club spin of 2.5. The effect on the ball results in 0 or 2.5? or ball spin 2.0 and club 3.5 means 5.5? Any ways seems like none of laws of physics apply here. I have had many putts, very little wind, flat lie, overpowered the stroke and it still did not reach the cup.