x2 for FSR. If it is just stained, it will clean it and is effortless, and mild on your skin and trailer. A little goes a long way.

If you have stuff growing on it , on-off, and slimy grimy work well, but are very harsh.

I get rust off in the sprinkler section at lowes,8$ a gallon.
works great ,put in a bug sprayer.

Really..i might have to give that a shot this Mary Kate on-off is starting to get expensive, but it works great.

The Works in a $ 10.00 garden sprayer.

It seems like after every time out (beaching the boat for 5-6 hours) is when it turns yellow quickly. What would be the best way to get rid of this...painting the bottom white or is that basiclly like painting the bottom with bottom paint?
Erik

No bottom paint Erik :eek: You can try On/Off, basically sulfuric acid, some don't like to use, say its harsh for the fiberglass, I have also used product called Ringo sold by a guy here on OSO (do a search) few years ago ... both successfully remove staining on your white gel.

I didnt mean painting the bottom with bottom paint..like the roll on bottom paint. I mean as if you would paint the intire boat (awlgrip type of paint) Just instead paint the bottom with that stuff (white of course).
I have been using Mary kate on-off and adding alot of water to it and it works 100% just would like to fix the yellow problem and wondering if paint it would fix it?
Thanks