Wow. I've never heard of in the air O.B. before, but it seems almost common there!
All three of those are small-town nine-holers in South Dakota, and I actuall know of one other that used to exist, but I looked at the Google Earth images and couldn't figure out if they still do it.
It is not allowed in the ROG, but one of those courses it was the only way to make the hole play at all. Tree planting will help it. Another one would have people driving their ball over a schoolyard, so that was out.
All three of those are small-town nine-holers in South Dakota, and I actuall know of one other that used to exist, but I looked at the Google Earth images and couldn't figure out if they still do it.
It is not allowed in the ROG, but one of those courses it was the only way to make the hole play at all. Tree planting will help it. Another one would have people driving their ball over a schoolyard, so that was out.
The same course also has that school's ball field, football field and running track in play:
K