Caveat: I live on the West Coast and no dick about Florida. However having said that, if it were I with my boat in your marina with the same questions, I'd haunt the marina looking for others with a hard bimini and ask them about their experience. If no one in your marina, I'd search out other marinas and ask the question there - regarding hurricane issues.
I have a hard time believing you would be the first boat with a hard top and I expect many boats in your area have been around for a long time with hard tops so that alone might begin to answer your question.
I am considering building a hard top bimini. I am active in the model railroad hobby and I'm known to step outside the box when approaching a problem. I have seriously considered a few options.
1) To use my current bimini soft top and lay medical guaze used for casting for broken bones in the hospital. You don't have to be a doctor to order this material (I already checked). I would lay this material on top and once it set, its sets like a rock. There is another step I would do so as to use a lighter plaster type material that sets very hard but is lighter called Hydrocal. I would then cover all this with fiberglass.
2) Here is a video of a guy using very cheap material to build his hard top. His method seems very viable to me and I am seriously considering using this method. Video below. I would still use the framing (tubes) I have currently and set this on top of it, instead of the canvas.
This video starts out slow, just hang in there, you will see what I am talking about