You likly can make it at high tide I used to go thru all the time- but its been years, I had a 3' draft- be careful about a mile or two north of the Island for rocks just under the surface -near a small cay
Second what Ram says. I did it some years ago in a power boat with 3'6" draft and had no problem but also went through on high tide. The tide in the banks lags the tide on the ocean by an hour or more, depending on location. Going through on a rising tide should give you the best shot.
The water is always bluer on the other side of the ocean.
Sometimes it's necessary to state the obvious for the benefit of the oblivious.
Rust is the poor man's Loctite.