How to get a "stain" out of the gel coat?

[TarHeel Challenger]

Hey Guys,

I was out last weekend, and I have noticed I have some brownish stains on the inside, and swim platform of my boat. You guys have any recommendations on what to use to get them out. I have tried some industrial strength and a semi stiff brush, but not working well. Thanks for the help

 

[Adam X20]

try acid wash

Muratic acid mixed with water
wear old clothes, playtex gloves, eye protection.
Harsh stuff but will remove stains.
Carefull & tke your time.
Have hose nearby flush thouroughly.

you can get muratic acid from Ceramic Tile supplier.

Again, careful with your skin.
Adam.

 

[RFoster130]

You can use rubbing compound and a buffer. Or for really stubborn stains you can wet sand the gel coat with a fine sand paper like 1500 grit. I have heard the muriatic acid works too. It is what they use to get concrete swimming pools clean. I have seen it strip some nasty stuff.

 

[Larry1]

stain

you can use bar keepers friend find it at walmart its kind of like ajax , shake powder on area and put just a little water on it make paste use stiff brush wash off. workes for me