Run
Run if you can.With Cat 3+ hurricanes, and a heavy storm surge, it isn't where your boat is docked, but where it is going to land.Your dock's structure is secondary to its location. That is, how exposed are you to wave action? Floating docks are, of course, much easier to tie off, and many can handle a surge of 12+ feet, so, if you're well sheltered from the waves, you may be OK. Make note that that is hard to achieve.While Frances was relatively weak, the southeast quandrant beat on us for hours on end. The storm surge was only about 5 - 6 ft at my marina, which I consider well protected, yet you could see where small pieces of concrete had chipped off the pillars. A cat 4 storm like Ivan would have lifted the entire dock off the pillars, and the waves would have left everything somewhere in downtown St. Pete.Yep, run if you can.