I have been anchored everyday for the last 3 years. From the Bahams to Georgia all through Florida. The Delta has been the Best anchor I have used so far. The Danforth and Fortress are fine for mud and sand as long as the wind and current dont change direction. Bruce is equaly bad at most things. I liked it when I started but it let me down more than once. Its better than the danforth in shifty conditions but not as good as the Delta for quick set and holding. The most important thing is to put out enough scope. Mark your rode. My early problems were mostly traced to using to little scope. "If you didnt skimp on a windless then to put out more than enough scope is no problem. I use the 35lb delta on a 42ft ketch. It only let me down once ina squal and it was my fault for powering up on the road to much and getting side ways to a shifting wind in Georgetown. I had been in a 60 knot squal a month before with no engine and it held even with a 180 deg. wind shift mid storm. I recomend delta for all but the softest mud. IMHO
My experience, exactly.
The bottom there is a muddy/sand as I recall. I would buy the biggest Fortress I could buy. It will break down and fit in the bilge when not in use. I would make that a primary, followed by my delta potentially in a 180 the opposite direction. Odd are the storm will either come across the peninsula or from the SW. If from the SW, that is where you will get hit the hardest because there is no land to slow her down (although the entire straight of Fl will not slow down a 3+ much at all).
Thus, position your Fortress to the SE and your Delta just east of N (not quite Nwest, in my opinion, because you will want to be covered should a SE storm come across. All chain rode, with great snubbers. I am not a fan of line rode in storm strength conditions, but you will need to set up a good shock absorber or you will jerk your anchor loose in the breaking swells. There are a lot of options for doing this, but make sure that no matter what, should the snubber break you still have the chain. In the worst of it (as I can tell you) your bow will be SOOOOO taunt I do not know you will get that much jerking motion.
However, there is a disclaimer on all of this:
1) DO NOT EVEN THINK ABOUT RIDING IT OUT ON YOUR BOAT. I did this once with my family. Once the storm really gets blowing and the surge comes in, you are NOT getting off that tub. We had no choice about it... but still regret it. I don't think you will ever find someone that has rode out a hurricane that would do it twice (if they lived to tell about it). Tie up your boat as best you can, then get the hell out as quickly as you can. They shut down many of the bridges at 35 sustained (we found out too late), thus get out early and do not wait until the last second. Once it is blowing hard, there are a few things you can do - but not much. Once it is over 80-100, you ARE NOT ABOUT TO DO ANYTHING BUT HUNKER DOWN BELOW AND REACCESS YOUR RELATIONSHIP WITH GOD!! You cannot go outside. Don't believe me?? Try standing up in the back of a pickup going 70. You cannot do it. Now, double that (as wind increases exponentially and 100 is probably twice the force of 70). That is the conditions you are in... not to mention all the debris flying around. DON'T DO IT! IT IS JUST A DAMNED BOAT!
2) All of this preparation will probably be for nothing. Odds of being hit are low. If you are hit, there will be some A-hole (sorry, that is the only word for it) with a Sea Ray who throws out a 15lb danforth for his 38 foot POS boat, then drags across your anchors and takes you into rocks with him (I have video footage of that one). Believe me... those odds are better than 50/50.
Hope all that helps. Reality is that you are better off dry dcking that thing and strapping it down to the ground. If the big one comes, nothing will save you but your insurance policy, FEMA, beanie-weenies, and Holiday Inn.