Digress away! I've focused my attention this year on cleaning up all fairway/green overlaps. I've probably tackled 12,000+ instances so far this year and am exhausted. I have about 8,000 to go. I've also set up daily diffs so I can catch people making these "mistakes" early on so that they don't spread. You can see some of my progress on my maproulette challenge: https://maproulette.org/browse/challenges/50926.

You're right that the partial overlaps are evil and need to be wiped off the map. I don't quite understand all of the math/geometry theories behind it, but somehow it is "cleaner" to have it drawn as two fairway parts instead of a single one. Ideally, the grounds crew would leave a fringe around the green and you can just draw the fairway all the way around the green and leave a gap. At that point, a multipolygon is the cleanest representation. 

Thanks again for the assist.
