An alternative to a cover might be to paint
it with a topcoat product. My dink was getting to look pretty bad from UV damage. I covered it with the west marine
liquid rubber topcoat product. I used this product because there were a few places where the fabric
was showing through and a lot of fraying around the seams. It now looks grat and the underlying hypalon will be protected for at least a while. They also sell a paint
type topcoat product that protects the hypalon/PVC from UV. It's available in a variety of colors. I'm thinking of painting over the gray rubber coat with the white topcoat product. My last fabric cover lasted about three years. If I get three years out of this I'll be happy and I won't have to deal with the PITA cover.