You can get a custom cover from one of a few vendors in the area. Delta Canvas in Discovery Bay comes to mind. My cover from Dawnine is not holding up as well as my previous cover from Delta, plus she flaked on some promises she had made before payment so she is off my preferred list. There was a canvas guy in Oakley at the base of the bridge, they did a good job on some bimini mods for my old boat. Tower Bimini is in Gilroy, they could probably build a cover for you. I would just get a full boat cover, I don't like covers that cover the tower but that's just me. Covercraft sells tire covers. I am in San Ramon my HOA is strict but there is a Sanger and a SAN in my neighborhood under those Costco canvas garages, not sure how they are getting away with it since I got a letter when I had an EZ up on my side yard?