How do I clean and brighten my fiberglass/gel coat non-slip areas on the deck?

I have sanded – sanded – sanded O yea and sanded the hull some more before buffing to get the brightest and most original shine back but have ran into a problem when it comes to the non-slip areas because they are still yellow and dingy. I have tried everything that I can think of but no results worth mentioning. Bleach, The Works toilet bowl cleaner, Clorox toilet bowel cleaner, baking soda – scrub brush, Hotsy super high pressure washer, mold and mildew remover, shower cleaners and then I even tried Power One from Fountain of Youth products all without any success.

Brush and hull cleaner (I use Starbrite Hull Cleaner) . Works very quick. Will remove your other wax though as it will run onto it, so I do this before waxing the rest of the boat.

I've always cleaned non skid with Softscrub w/bleach and a scrub brush. Worked great

I will give both a try and let you guys know.

Thanks!

I was thinking of trying meguires proffesional series #1 then #2 (#1 med. Cut cleaner/#2 fine cut cleaner) with a brush to try to bring color and shine back

I have already tries the cutting compound with a heavy bristle brush and had very little affect. I think the biggest problem I am having is that there seems to be some sort of rust or iron dust that had settled on the surface during the boats 6 years of uncovered non use by the last owners.

I would think about trying "naval jelly" or something like.
God i love chemicals!! Whish i had some of all of them!!

naval jelly? sounds like I'm going to get IT involved looking that one up from work..

It's a comercial strength jelly that removes/eats rust. Been around forever in any hardware store may be better new products simular but if you have rust naval jelly removes rust now, as for fiberglass friendly, have to ask somdbody else

Best thing for removing rust is Barkeepers Friend. It's a cleanser in powder form that contains Oxylic acid which is the component that removes rust.