Ground clearance is every bit as important as length. I raised Quicksilver up by a full four inches when installing the Ride-Rite suspension. Entrances to gasolineras in remote areas and some rural campgrounds seem to be the biggest challenges.
Fold in mirrors, a quality set of communication handheld radios and thorough knowledge of routes to RV parks on the entrance roads to Colonial Cities and towns are an almost must-have.
I had to detach a towed pickup at a gasolinera then proceed to an RV spot vehicle-by-vehicle too many times to count. It is a bother to say the least.
But ripping off of tanks and plumbing is a hazard that in my opinion is addressed far too few times. I glued a large big rig mud flap to my gray and black holding tanks. They have gotten scars. So they have protected the tanks.
Another trick is the mounting of a truck transmission flexible twanger switch that is used for installation of reverse lights on vehicles with no backup light switch. The extension on mine sticks up 6" higher than the top of the (removed) A/C units. When the orange pilot light on the dash blinked -- I stopped. These backup light switches are waterproof, and high-amp capacity.