Who uses a boat cover regulary and what brand works best?

[Visco]

I currently have a WindStorm boat cover on my boat, and about a month into using this cover I started to have issues. The cover started to rip in the aft corners, and then at the seams. this cover also started to mold on the inside as well. I called about the warranty, and they said that the issues are not covered under warranty but they would gladly give me a 15% discount with the purchase of a new cover .

Has anyone had any good luck with their boat cover, and if so, can you give me some advise for my next purchase?

I need it for regular use, and also for towing.

Thanks