I think some of the boats in Paraquita bay will be repairable. It will probably in part depend on how soon they can get to them though since if they are open and have water..etc things can go even worse quickly.

Our boat is with Swain Sailing out of Nanny Cay and while it looks like the fleet there is lost, there are some boats in Newport RI that are (at least before Irma) set to return in November. Ours fortunately is one of them. So there will be some options and I'm certain they won't be the only ones.