Just bought some MaryKate ON/OFF as to remove some hard water stains on the bottom of my Rinker. Has anyone used it to clean a stainless steel prop or the outdrive. Have those same hard water stains on each of them (boat only sits in water Friday-Sunday and wiped down after every use). Wanted your opinions before I put on a "test" spot.
Current - Rinker R1
"Its easier to beg for forgivness than ask for permission"