but the island "green" in bg is a "2-putt green" not a 1-putter.
that's my point exactly. i don't know the exact putt percentage of 27 footers made by 1000 rated players. i'd guess it's a bit better than your 50% guess, but not 80%. if you take all the putts from within the haybales on winthrop #17, though, the 1000 rated player would probably average 1.1ish