I have never been a huge fan of holes that back right up to a water hazard, because I don't understand the drop rule.
The only ones I can think of that I've built are the new 2nd and 11th greens at The Lido. The 11th has a bunker guarding the back left, but if you miss long right, or anywhere over the back at the 2nd, you are going down the bank and gone. They may need a drop area on the 2nd, because that bank is too steep to take a drop if they keep mowing it tight.