Confirming other responses: Little Harbor on Peter is referred to as "unemployment bay" by the crewed yachts. Everyone anchors stern-too there because you tend to swing a lot in the swirling winds (usually very light). In my experience, stern-too (or med-moor) there can be tricky. It's important to drop anchor such that you have enough chain to get close enough to shore for your stern lines to reach. I don't think most bareboats have long enough lines, but I could be wrong. One also has to be careful how to tie off on shore as the rocks are sharp and I've seen lines chafe through. Watch out for sea urchins close to shore!
Mostly we see tarpon hanging out under boats. Barracudas are loners, so you typically only see one. Tarpon are attracted to the underwater lights many boats have these days....and maybe expecting food scraps. They are big fish, totally harmless, and will keep their distance if you jump in. Its actually fun to snorkel with them at night.
That said, Little Harbor is one of our favorite spots. Its calm, quiet, beautiful, nice snorkeling along the rocks. Definitely worth the extra effort.
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