Mike,
I know the 12th does, I wasn't contesting that.
15 you are correct too, in a sense, although the player out to the right doesn't necessarily have to challenge the dune on the left with a second shot if going for the green in three?
Unlike say RM East 10/17, where the diagonals figure for any player on any part of the fairway?
Not sure about 2 at all. I am struggling a bit to remember it exactly, but I would have thought there would only be a diagonal element if going in two from the right hands side of the fairway, and surely no one is silly enough to try that? Best line in is from the left hand side, and even if you are on the right and laying up, it is more of a bottleneck?