Hmm, well not to mention you would also harm your trailer if you used that stuff on the bottom of your boat. I believe the marina uses a special trailer for that acid wash each time. Unless they mean its just an old trailer they dont care about anymore or something.

From the end of May till September, my boat sits in the water all summer long and gets used every weekend OR the weekend after that.

Let us know if you are succesful :)

I would stay with something that was specifically for hull cleaning. I have used the starbrite brand with a scotchbrite pad. Using 2 products with the word "brite" in them will work for sure!

scotch brite pads will scuff the finish up, i just tried one of those on a rusty wheel. didnt work out too well! thanks for the ideas guys, i am almost done with new carpet be i will be doing the cleaning and polishing next.

Most all of the better hull cleaners use either Oxalic or Muratic acid mixed in a ratio of about 1:4 with water or the like. I have used a product called Zing for years and have also mixed my own as Muratic acid is very cheap. I have to admit, my home brew just didn't do the job that Zing did. I have tried several other brands as well but I'm a believer in Zing.

My boat stays on a lift down at LOTO on my dock and about every other season right before waxing I apply it. I have an old Hudson/pump sprayer that I use to apply it with. I spray down the bunks and lift (same procedure on a trailer) with water then I spray the hull with Zing. Let it sit for about 5 minutes then rinse off and repeat the process once more. Scrubbing isn't necessary but on occassion I will use a brush on a pole to make sure everything has been adequately covered. The brown literally just melts away. Now it's time to re-apply a coat of wax as everything will be stripped off. I also have problems in our dirty lake with trails at the water line so a couple times during the season I simply wipe those areas down with a rag and Zing, rinse, wax and all is well.

When I bought my Z302, it had lived its entire life sitting in a slip at a marina and the bottom was stained beyond belief. I honestly thought it would never come clean but after my two apps of Zing, it's as white as the rest of the boat.

Just make sure to hose down in metal objects within dripping or spraying distance and rinse it off thoroughly. I've heard that people doing it on the trailer should back the boat on the trailer into the water afterwards to make sure all the acid is thoroughly rinsed from the trailer itself. With a lift, it's easy, just drop it down.

Dave

this type of acid mainly reacts to mineral and metals. Concrete for example is made with lime. if you leave it set over nite you will have holes in your drive. If your trailer is aluminium don't use the acid. If its painted it will be fine. Actually if you spray muriatic acid on rust it will convert the rust so you can paint over it after cleaning.

i ended up using "the works" toilet bowl cleaner and a scrubber pad and it worked great! i use to use sno-bowl toilet cleaner but i cant find it anywhere! it is looking great now!

bowl cleaner has muriatic acid in it. If you go to TSC a bottle of acid is about 2 bucks. Get a spray bottle and mix it with water. You can clean you shower with it for years. Also you don't have to scrub with the acid let it set for 10-20 min and spray it off. if it's not 100 clean wait another 30 min it will be gone. I tried a test spot on mine scrubbed it and sprayed it off rite away. I could see that it would work but it was going to be a lot of work and decided to do it later. about a half hour later I walked past a very clean white shiny patch.

i have used that too, the bowl cleaner has always seemed to work better. allot of people in my marina uses the bowl cleaner......

star brite
 

i just left my boat out for the 2 weeks i was not able to get back to the river. needless to say i have bird c___ and stuff all over the boat. i used the star brite from walmart for the hull and it is now spotless. what i need is something to clean the seats with (any ideas?) PLEASE HELP!!! IT LOOKS REALLY BAD.