Sails for Vanity
Black cotton sheets, waxed would probably do the trick, but since my Grandad used to polish his car with Kiwi boot polish, maybe you're on the button with that suggestion. I don't recall his old A50 ever becoming a black danger zone.
Worth a try I suppose. I think I have some somewhere. T'ain't long since I had some black leather shoes. BTW, PM'd you about the wherry article scans.
Martin