Fall is here in Minneapolis, and my Nacra 5.0 just came off the city lake with some really ugly algae stains. Power washing didn't help much. Does anyone have any recommendations for getting them out? Any experience with Aurora waterline stain remover or Davis fiberglass stain remover?

Primary concern is to not damage the boat, but easy use (paint-roller on, hose off) appeals to lazy me...

I'm also open to ideas for preventing the stains next year. The couple of coats of marine wax before it went in the water didn't help much, nor did the mid-season scrubs on the beach.

Someone recently posted here using a lemon to remove stains from blades or boards. They were handing out lime slices for the margaritas at Nationals last week so I marched down to the beach with one quater wedge and proceeded to easily remove ALL the stain on our 13 year old rudders. <img src="http://www.catsailor.com/forums/images/graemlins/smile.gif" alt="" />

Although it did not work on the one rust stain it's certatinly worth a try.

Try some $1 Bon Ami. It got the winter green slime from 3 years outside with no care to my 17 before I started sailing it again. Worth a try. It also got out rust stains, if you make a paste and let it set awhile.

Doug