i don’t really have an answer to your question as i’ve been told that diving on the Gulf Side isn’t that great.
i went down to Marco Island in 2002 and when i asked around i could not find a LDS that did charters as they all said the vis sucked.
this could of been because of the time of year as it was the spring and they said that the run-off from the spring rains reduced the vis to 10’ at best.