We have a boat, and that's 'RV' enough for us, but a lot of people at the marina where we go have both boats and RVs. They camp out on the bank of the river in their RV and just use the boats to go out on the water. It is a cool idea, but very expensive. Many of them have
rv repair plans so that they can get their RVs fixed if they have to, some travel back and forth with the RVs every weekend, although some pay the higher fees to just keep their RV in the same spot all year long. I don't think we'll ever have anything like that to worry about, but it's nice visiting them when we're out there, and getting to relax in the motor homes. The boat is nice, but it does get cramped sometimes.