Oldstir
I have made all of the putting challenges save the 8th hole, still can't get that one. The second hole is very difficult, I have made it 2 times and when I'm playing a challenge match for credits I don't even try to make it, I just take 5 feet and be happy.
The green speed can vary on this challenge but the hole is always in the same place. I have made it on fast and very fast greens. You have to go almost up in the heavy fringe and carry a little speed to make it. When I am trying to make it and not worrying about a score, I often go 9 feet by on it.
I don't use the wedge shot on it but I have seen it holed three times with a punched wedge. The putting challenge loses it's glamour once you hole them all and since the aces don't count in CTTH I have sort of stopped playing it unless I end up in it during a blitz challenge game.