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Old     (AwaKening)      Join Date: Jul 2013       08-04-2013, 3:19 PM Reply   
I don't think the previous owners of this boat did much to keep it clean. The lower part of my white, about where the water line is, looks yellowed.

I was debating getting this On & Off stuff

Wondered if anyone has tried it. Worried about it ruining the paint on my trailer. I'm also not sure what it will do to the sticker decals.
Old     (wakebordr11)      Join Date: May 2001       08-04-2013, 3:24 PM Reply   
Post a picture. That stuff will discolor decals... It's not good for paint but won't kill it if you rinse it well after using it...
Old     (bryce2320)      Join Date: May 2012       08-04-2013, 3:36 PM Reply   
Under the hull where grime and hard water has built up? I've heard toilet bowl cleaner is great on that...
Old     (supersonicmi)      Join Date: Sep 2005       08-04-2013, 4:37 PM Reply   
I use Starbright hull cleaner... works great every time! It's seem like strong stuff so don't breathe in the fumes, I actually get the cheap mouth masks just to be sure.
Old     (xstarrider)      Join Date: Jun 2007       08-04-2013, 4:43 PM Reply   
The Works toilet bowl cleaner gel works awesome with a nice sponge or soft bristle brush. Star bright works ok.

Otherwise if it is really bad an acid wash is the only way to go
Old     (hco)      Join Date: Jun 2006       08-04-2013, 5:55 PM Reply   
On & Off will work. You can dilute it so that it doesn't hurt the trailer as much. Avoid overspray and try not to let it drip on the trailer. Hose down immediately after.
Old     (AwaKening)      Join Date: Jul 2013       08-04-2013, 8:01 PM Reply   
I'll post some pictures just so you can see the boat, but you can't really see what I'm talking about in the photos. Looks like a yellowish reflection in the light from a distance, but you can see up close it's more of a yellow scum maybe. Sorry, but I couldn't really get the photos to show it.

I'll probably start with the toilet bowl cleaner first.
Old     (Sp8race1010)      Join Date: Jul 2012       08-04-2013, 9:06 PM Reply   
I don't have any pics from last weekends cleaning, but I have an 02 supra launch ssv and the gel coat had been neglected by the previous owner. Out lake is very muddy due to being smaller and fed by a river. Long story short my white gel coat was turning brown due to not having any wax on it.
So I did a little research and found that oxalic acid would remove hard water stains from fiberglass and many other materials.
So further reading I found that a product I use often called "bar keepers friend" had a small snout of this acid. This stuff is in a bottle similar to comet cleaner but gold and blue in color. I took and made a paste with the powder and tested under the swim platform. Came clean with light rag coverage within 20. Seconds.
So I then took one 20-24 oz bottle and mixed it with 3 gal warm water to dissolve the powder in the water.
I then used a car wash mitt to spread on hill and scrub away the grime.
I rinsed thoroughly after applying and letting stand 3-5 min. Rinsed 1 more time then scrubbed with a clean wet towel to remove residue then rinsed, dried and used 6 coats of griots carnauba show wax.

Now it looks like a fresh new boat will post a few pics when I get back to the lake house this weekend.
Old     (Jmaxymek)      Join Date: Feb 2012       08-04-2013, 9:56 PM Reply   
JJV's is what we use for detailing boats in our shop. They say spray on and rinse off, which works pretty well, I'll also take a rag to it just to aid the cleaning and spread it out without using so much. Really awesome stuff it takes the yellow right off. It doesn't hurt the trailer paint, nor will it wreck your decals.

Last edited by Jmaxymek; 08-04-2013 at 9:58 PM. Reason: More info.
Old     (DenverRider)      Join Date: Feb 2013       08-05-2013, 9:52 AM Reply   
I had major yellow stains on my old Tige. I spent a whole day on the first side wet sanding and polishing to a nice white shine again. Then I spent a half hour on the other side with some Works toilet bowl cleaner and got the same result.
Old     (AwaKening)      Join Date: Jul 2013       08-06-2013, 8:52 AM Reply   
Thanks for all the suggestions. Will try some toilet bowl cleaner after our next trip out since it seems like the easiest solution.
Old     (Xtreme_Aviator)      Join Date: Mar 2012       08-06-2013, 9:32 AM Reply   
FSR sold at West Marine does great as well. Blue colored gel, wipe it on, let it sit a few seconds and then wash it with a water hose. For heavy yellow stains, you can scrub with a towel. It will be bright white when you are done.

Be sure after you use any products like this to wax it heavily. The cleaner opens the pores of the fiberglass and you want to seal them back up or it will quickly discolor again.


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