I have never used it but a friend that leaves one in a slip told me that the slr will take it off....
That is the stuff used to take tarnish off plumbing fixtures.
Do you mean CLR? Is that safe to use on the lake? I will be washing the boat at my house and the storm drainage drains into our neighborhood pond, which is across the street from me.
i'd power wash it real good and then do a double dose of "the werks". you can get it at Wal Mart. you'll need to wax the hull too.
With "CLR" or "the Works" do you soak the area real good and let it sit a bit then wipe? Does that algea come off real easy with either of these products? Definitely wax after I get all the junk off.