In playing with the Tour Legends in our club, I use this formula for championship greens. Distance divided by 1.4 on level putts. Downhill I take off 1 foot for every 2 inches of downhill, seems to work well. On uphill putts I putt like Tourney Speed greens and that also has served me well. Hope this helps.
chrisironsbones:
People are always afraid of championship greens the amount you need to hit LESS on down slopes or running past hole by 5+ feet on 10 footers. Would be good for decent tour legends to help lower tiers get to grips with these greens.