Out where I am I wouldn't have anything except a hard side -- we got grizzly and black bears.

Then don't buy a Casita brand trailer. I recently witnessed a Casita's door being impaled by the end of a split-rail fence when the driver approached the entrance into a camping area at the wrong angle. Wanna know what the door's made of? Two thin sheets of plastic and a Styrofoam core. Ol' Grizz'd slice through one of them like it was room temperature butter.