How do you keep the black parts of your tender from marking

[sailingdolphin]

your hull.  

I have an older avon and the black parts- such as the railing and oak-locks mark up the boat like black sole shoes.  I can always get it off but it sure is a pain.  

Any idea on what I can put on the black parts to seal it?

[Ron Hill]

Doug : Try some cleaner wax on those "black" parts and see if that doesn't help.