Seal Trap is beautiful and I would recommend going in with the dinghy at low and marking the cookie trail. There is plenty of water inside and you can even see through the woods over into Moore's. There are some trails too. Outward Bound uses the anchorage just behind the cliff on the way in but if you thread your way past that it opens up and is beautiful.. You will want to go in & out on the top 1/3 of the tide or better.
Unfortunately like much of the coast all the secret spots are getting discovered. We ghosted a long way to find three boats already in Seal Trap.....