Re: Yamaha Waverunner Cover
Its a more complicated answer than you think. Is this the OEM cover? How old is it? These answeres will tell me what fabric it is and then I can tell you how to clean it.
In most cases, the best thing to do on any cover is to try to clean the spot with a soft brissle brush and soapy water to the area. Do not use harsh detergents, something like Woolite is best, otherwise you end up washing off the DWR (water resistant treatment). The treatments to re-waterproof anything only work if the item it totally clean and free of dirt or suds. Otherwise the treatments attach themselves to that and they just wash away. The best treatment is probably 303 and I think you can buy it on iboats.com, I am not sure.
You can email me the kind of cover you have and I can better help you.
terri@poppycompany.com