Originally Posted by XStar08
Thank you for your replies.
I don't know what the dealer used but it was for sure some serious stuff since all the hard water stains where gone almost immediately (I mean the ones which occur when the boat is in the water regularly and not cleaned every time).
I already tried some metal polish stuff but did not work out. What do you think the rub rail is made of? Stainless steel or aluminum?
I'm going to say stainless.