It turned out that "Pure Evil #3: Deception" was simply way too easy! We were obviously feeling soft the day that we put that one out. So...time to up our game again!
You do not have to attempt this cache, and you'll get the same smiley face for finding a rusty Eclipse mint tin or fake chewing gum in a bus shelter anyway, so why bother? But, if for some reason you do decide to go for it, here's some advice (or not)...
How you get there is up to you. The tide will be your friend or foe depending on your method of choice. Once at GZ, the cache should be a relatively easy retrieval find. Oh, and watch out for oysters as they hurt. Mwa-ha-ha-haaaa!!!