[bobg]

I am going to help a friend clean up his boat on Sunday, I plan on using the Klasse twins on it after we clean it up.
Anyway, the boat is in pretty good condition, a little oxidation on the top, but the main problem is there appears to be a rust colored layer on the portion of the boat that sits in the water all the time.

Any suggestions on the best way to remove this without damaging the fiberglass?

Thanks in advance.