Fairly new convert to the Ultimate King which was purchased used through this site (thanks Crazy Horse). Completely love this seat except that I have read that the seat is not water proof. Apparently, the seats are usually shipped new with a rain cover but this one did not come with one. Has anyone here been caught in a good rain without the cover? Did it soak up water and take days to dry out? Can the seat be treated with something adequately so as not to need the cover? Thanks for the help.