Ernie is correct about not using a cover or anything that can be moved by the wind. I have seen two paint jobs really messed up by car covers that were pulled down as tight as they could be. Just the slight movement of the covers left the top of the hood and trunk looking as if they had been lightly sanded. One possible option if your trailer permits would be get some aluminum rails and mount them so you could stretch a canvass over them to cover the cat but not have it close enough anywhere to touch the car. We did that once and it worked but was a real pain and I would hire a closed hauler before doing it again.
Ron
