Last time I was down there we went out with a bunch of different outfits.
The only one I can remember was Bud and Mary's Marina. Went off shore with them and caught a bunch of dorado, bonitas and some good sized amber jacks. My bigun was chewed in half by a 12'-14' hammerhead!!!
We fished about 14 miles off shore and got our AJ's off a hump out there. Dorado were caught off mats of floating weeds. It was insane!!! there was 8 of us and I took time out to climb into the tuna tower and video the action. All 7 of my buddies all hooked up at once and fish everywhere!!!!
We also took trips out of Marathon for tarpon and Key West off shore.
We took 2 or 3 trips out of Islamorada with different outfits and did well on each trip.
Have fun and post lots of pics when you go.