California Car Covers are great. They custom make it to your specs, have patterns fer practically every car ever made and will add custom stuff for very little money.
For instance, my 80 cover is 1 foot taller, a foot longer in front and rear for the winch and rear tire. Comes with a 4 year warranty. I had one get thin and tore on the roof line after 3 years and they replaced it with a new one at no charge. Really a good company to deal with.
On sale at Pep Boys now is the 10 x 20 canopy for $89. I get about 2 years out of the canvas before I have to replace it, which is about another $89.........