I'm thinking you are referring to a permanently sited trailer? Not going to be moved anytime soon?
If I had to live in a trailer, it would be a 60 or 70 ft trailer designed to be lived in permanently. Not a travel trailer. At the very least, a park model trailer that has full size frig, stove, toilet & shower.
AND in FL, it would definitely be TIED DOWN!!!
Not to mention that they aren't insulated like a house with thick walls, so even with A/C, its gonna be HOT! I would watch for leaks. You've got a good potential for mold / mildew with small quarters & no ventilation from cooking & bathing steam. Like I said, travel trailers are not designed to be lived in full time.
I'm not sure you can get what would be the equivalent to homeowners insurance if you are living in a travel trailer. Sure you could protect the trailer, but not sure if you can truely get what you should have & need for liability & medical payments to others if anyone is hurt on your property. Liability extends away from your property also. Foremost Insurance would probably be your best bet, but travel trailers aren't meant to be lived in permanently.
Lots of terms are tossed around incorrectly in the RV / trailer industry. A travel trailer has a hitch & you hook it up to a car or truck & move it easily.
Mobile home is what people think of when you say "trailer park". Those 60 or 70 ft trailers that are permantely sited with decks & skirts.
Park models are like mobile homes, but shorter (maybe 40 ft) and new ones have catherdral ceilings & 2nd story lofts.
Fifth wheel falls into the travel trailer category but as you know, needs a special hook up into a truck bed.
Then there are motor homes that come in different classes (sizes)........, pop-ups/tent trailers.......