This is what FSR is.

Thats what the Works is too. And its cheap, fast and available anywhere.

Glad I ran into this thread.. I've been using On/Off and that stuff works, but is dayumn killer if it hits your skin or you breath it in. Just ordered some Power One

Where do you find Oxalic Acid?

Thanks,

I have found Crystal Lakes hull cleaner to work extremely well. I mix it in a pump spray bottle, spray in on wait 2 minutes brush it in and spray it off and back to to white again.

FSR (Fiberglass Stain Remover)

Wipe on, sits for a couple minutes and rinse off. Done.

You watch the yellow turn white while you wait. Amazing stuff.

I have used most of the ones listed but stick to FSR now... it doesn't seem as strong as the rest but because it is a Gel it sticks to the hull and slowly works. Because it isn't as strong the bottom doesn't get yellow again right away like some of the other cleaners that seem to microscopically damage the gel coat.

Agree looking for some different options as well.