Formula = Subtract 3 ft for every 10 ft. Then, add the rise or fall component to the putt.(exp) .. 30 ft putt / 4 in. up hill = (30 - 3 x 3) + 4 = 25 ft. Hit the putt 25 ft with the right pitch in place. If the putt doesn't drop you will get close enough for a 2 putt green and at Oakmont, that is very good. lol
(exp) DOWNHILL - 16 ft putt / 7 in. downhill = (16 - (3 + 2)) - 7 = 4 ft. Hit the putt @ 4 ft.
Get the feel for it and, it works very well. Hope this helps. I know it can be extremely frustating..lol edge...