We were there last April. We did see boats, sail and power, go through the channel between Bush key and the fort, however we did not try it so I cannot speak to the depths.
or pump outs. There are outhouses available, after the park closes, for the campers there and, presumably, for the folks on the boats. During the day you can use the facilities on the Fast Ferries that run out from Key West. You might get a "look" from the crew, but that's the rule
from the park service
You are pretty much on your own for everything and need to bring all that you will require, although the crews from the fast ferries are usually willing to work with you as far as picking up parts
for you and things of that nature. Keep in mind, getting a weather
window out there will in no way guaranty you will get one back! I talked to one boater that was stuck there loung enough that he had to take the ferry
in to KW, stay over night, and return with four jerry jugs of water
. A hunter
460 should be able to bash though enough of what you might find though.
For fishing information you might want to check out http://www.nps.gov/drto/faqs.htm
I also found the park service
much less than helpful while we were there. I listened as other boaters would try to contact them. They would not answer them at all and then, when another boater would give them a quick answer they would jump on the radio
and chastise them for being on ch-16. Very poor for someone whose wages are paid by our taxes! My opinion anyway.
It's a very unique place. Watching the fort appear out of the water as you approach will be appreciated. Clear water, great snorkeling and lots of very interesting history
. Good luck and I wish you great fun on the trip.