Specific camper covers are expensive and, in my opinion, are not well made enough to justify the cost. May I suggest a thick tarp. I did this with great success for many years prior to my metal canopy. A few tricks I have learned are to use a pair of 2x2's with dowels on the ends to pull the tarp up and over the RV. Makes lifting over vents, AC much earier and keeps us off the ladder. Also hand milk jugs partly filled with water off the bottom of the tarp to minimize wind flap. Hand and use bungee cords where possible and fold the corners Worked well for us