Re: Florida or not?
If your vessel is 30 years or older, then you can register in Florida as an Antique Vessel. I just recently found this out, and now instead of paying $87.50 per year, I am charged $4.95. It is funny that I pay more now to register my 8' walkerbay dinghy ith 2hp outboard.
As for numbers, I have read that there is a way to keep your out of state numbers, but still register your vessel in Florida. This is ment to be temporary for those staying a short term.
It may be better to document the vessel. That way you don't need to have the registration numbers on the vessel. Documentation is a one time cost, the regular renewals are free. I am surprise a vessel your size is not documented.
That said, I kept my sailboat (5.4' draft) in the St Pete/Pass-a-grill area of Tampa bay. While the area is nice, I now keep my sailboat in Carrabelle, Fl which is across the big bend at the start of the Gulf Itracoastal waterway. I personally think the sailing here is by far better than the Tampa area. But the area is more rustic, so if you want an area which is overly developed, then this part of the FL panhandle would not be for you.
S/V Johanna Rose