Liquid Rubber, by isaland inflatibles is GREAT stuff. years ago, we got turned on to it by a guy who rebuilds inflatibles for the navy seals
. we thin it w/ zylene (use gloves w/ zylene) about 25% and it'll cover a 12 ft dink. basically, it keeps those nasty u.v. rays from the fabric
, it seals
any pin-hole leaks
and thieves will steal the nice one next to yours as it looks kinda wierd. our dink (in the tropics) is 12 yrs old and hardly ever do we need to pump it up. if you're worried about the look of the liquid rubber, buy the finish coat---looks like new.