I am somewhat familiar with the left side of CPC's #16. I made the mistake of going down to the cove without a club, found my ball in the sand with a realistic shot up the cliff to the large green, but by the time my caddie was able to get to me after tending to his other player, the ball was carried out into the ocean by a wave. There are no boundaries around the hole; the cliff, beach, and the ocean are considered part of the course, or so I was told. Even if you find the ball, unless you can hit it again, there is not a likely spot to take a legal drop.
Regarding ESAs, the then supt. at Spanish Bay had a few things to say about the hardly sensitive, common natives that he wasn't allow to touch without first obtaining permission. Unlike most private sector agreements which typically contain the fair, commonsense condition: "permission shall not be unreasonably witheld", the CA regulatory authorities made it nearly impossible for him to make the course more playable by cutting back some of the waist high junk around many of the playing areas.