My Dad has an older motorhome which he bought off of his father, When they were kids, my grandfather had a seatbelt installed on the raised center platform between the captain's chairs. I have seen the seatbelt and looked closely, it is bolted to the frame, if for some reason I were to take DS camping with my father in this motorhome, along with my Dad's goddaughter (2) in your opinion, would this seatbelt be safe for a rfing seat? there is no seat back there, the seatbelt is a lapbelt only installed for my aunt when they adopted her a long time ago