if you subtract 20%of your calculated putting distance from each of your tournament speed greens, using the standard green speed scale., the distance of your putts will always be+3in.- +8in. which is perfect.
Example- 25ft. putt 6" uphill: 25 + 6=31ft., 31 x .20=6.2, 31 - 6.2=24.8ft.
another- 17ft. putt 7" downhill: 17 - 7=10ft. 10 x .20=2, 10 - 2=8ft.
This works so well for me on the tournament speed greens, that as a master, I I putt far superior on the tournament speed greens than my own very fast speed greens.