It's probably because there's some sort of access shenanigans, and not because they're childish about secret crags. Or I would hope it would involve making sure people can swim.
If you've got enough time, how I checked out my project, (only to find it's invisible to satelites so I still dunno if I need a boat or not), was to use the aerial photographs on multimap.com, so you could scan the whole coast of pembroke. Wouldn't deep water show up as a different colour - you could compare it to places like Connor? Feeding this and current geology maps into the supercomputer might yield results. But you may as well go along next month....