I was just down there a few weeks ago. I could not get any farther than Key Largo on the inside. We got into Blackwater Sound (that’s where Gilbert’s, Carribean Club, Big Chill, Marriott, etc. are). When you leave Blackwater Sound and enter that next “river” which takes you to Tarpon Basin, there is a shallow hump there that I can’t get over. Last Fall, I went down through there, all the way to Tavernier, in a 46' power cat with a draft of about 2.5 feet. Even with that boat, we went over that hump in neutral. I watched it on the depth sounder. I cannot remember the exact number, but it was something like almost 4 feet. I do remember that I marked my chart as that point being the end of the line for Sanctuary which has a 5' draft. Question - do the later model 53's have the same 4' draft as the older ones, like Pascal’s? For some reason, I seem to think that the newer boats’ drafts got deeper, or maybe I’m just comparing the 53MY to the 58YF which is slightly deeper than the 53MY.
Once you pass Gilbert’s, go slow - you’ll see the “chocolate milk” behind you, but that will clear as you get further into the sound. It’s all soft in there. You can anchor nicely in front of the Carribean Club. We spent almost a week there and had a blast with our little Hober, exploring all those places the big boat can’t get into. You can get to the outside from there in a little boat, which we did several times. I can’t wait go back and do all that, and more, again. Blackwater Sound has become one of my favorite places. There were places we didn’t get to explore because we ran out of days.