When the pin is back on 9 the options (for me) are to try to reach the back tier with a three wood or hit a long iron into the gully. Because there is so much trouble on both sides of the green and the target is smaller on the far side of the gully, I choose to play for the gully and take my chances on being able to two putt. Worst case score ought to be a four. A wild three wood brings all sorts of bad possibilities into play. Played the Biarritz (17th) at Fox Chapel in June, which is about the same length (230 yards), and reached the back tier with a three wood; but this hole is out in the open and you can miss left or right and still find your ball.
The first two times I played Yale I was in my pocket on 18. The third time, I hit three wood off the tee to avoid going through the fairway and then busted another three wood past the ridge that divides the fairway, pitched on and made par. I'm still not sure if I like the hole but at least I know how to play it.