Magic Eraser’s work! Magic Eraser’s are good for removing any type of marks on your boat. ¬†Sometimes you need a little water or chemical spray it make it work better. I’ve also found that magic erasers work wonders¬†on vinyl seats. Simply spray a degreaser of your choice on the vinyl seats, rub the magic eraser on the seat, then spray away with water. Remember to use a vinyl protectant after you are done with your vinyl seats. Magic Eraser’s have my vote!