This link is a post from last year that has a pic of how we carry our bikes.
http://www.5thwheelforums.com/forums...238&highlight=
We aren't full timers so the space was avail. The bikes are out of sight and always clean. Used quick atach fittings designed for the bed of a pick up, the quick attach front wheel removed and hooks up real easy. Very secure. No straps at all. Picked up at a local bike shop.
Cheers,
Bill