First and foremost, we are not tax professionals. Please consult a CPA for advice on your specific tax situation.
That said, as we understand it, it's really no different than living in a sticks and bricks and is all based on your domicile. We "live" in Florida. That's our permanent address. So, we file as such.
Many people "move" their domicile when they go full time. Escapees has a great article on this topic.
Also see this related FAQ Topic.