I am going to order some non-skid for the deck of my 30' Hunter Cherubini project boat. I don't care for the gritty abrasive type and looks like the Kiwigrip may be the ticket. For those who have used this product do you think a gallon can cover the deck area of the 30 foot Cherubini? (cabin top, foredeck, side decks and maybe the cockpit floor) . I was wanting to go with white. Any comments on this stuff?. Is the white a pain to keep clean?