On/Off if the boat is really hit..

For general upkeep, you can't beat Slimy Grimy.

Norlo toilet bowl cleaner , Mary k, it's all the same stuff basically

Use rubber gloves & a paint brush after you spray it on

Why do you think they are not good for you boat? They come in a PLASTIC bottle Your boat is basically made of plastic.

Are any of these cleaners bad for Aluminum? I only ask because mine sits on an aluminum Myco and I would be sad if they some how tarnished the trailer.

Definitely will stain/etch aluminum. Cover the trailer beams with plastic, or wet the trailer first.

it all depends on what you trying to get off? the carpet moss?

or the brown stain ? what.

the brown stain can be WIPPED off with iron out, and water. (int he pluming section of walmart.)

Another vote for Power One... I used it on mine last year with great results. Works just as good as acid, but with the chemical burns!

POWER ONE! Enuff said.

Haha. Have you ever tried putting it in a cheap spray bottle like windex? not a good outcome. The stuff works great, no work required, but then you have to wax everything all over again. I was once day working on a 130 at Bahia Mar in Lauderdale and they wanted me to clean the tiny enclosed lazarette with it. I said, sorry man, I don't get paid enough for that.

+1...If it is a serious stain, buff out with diamond cut and then apply Leverage wax. I get compliments all the time for my '97 Baja.