Has anyone used Penitrol (spelling ?) directly on the top cabin or hull surface as a brightner. My top cabin is dull and someone suggested applying several applications of Penitrol to brighten it up and yet it is not slippery. I know that West Marine carries the product. If it works it sure beats rubbing compound and polish. Also has anyone heard of Daly's Sea Fin (spelling ?) as an interior teak treatmentThanks,Tarheel