V-bottom: run-a-ground, low friction protection gloss with anti-fouling ability. Fiberglass, aluminum, steel & wood boats benefit from hull, deck & gun-wall protection as well as insulation, sound & vibration proofing. Speed, handling, fuel efficiency, & algae or barnacle resistance are needs of big & tiny marine vessels. Just one CrystaLining product, simply mixed at that ratio can provide the proper texture: super hard, high gloss hull & external parts, low-profile orange-peel, soft internal walls & rubbery, easy-cleaning, safety decking. Drop dead gorgeous!