Cleaning the non skid deck

I was wondering what people use to clean the decks of their laser. I have been using Marine Muck-Off. Its good, but it doesn't get off the tough stains. Could i use Jif or something like that? Any advice would be much appreciated

I used normal washing up liquid with a tough bristled brush (not too tough).
On the really tough stains I used Jif which did the job well.

What sort of product is Jif? Here it is peanut butter!

Its also known as Cif in other countries... its a strong household cleaner which can clean most things.
It requires very little of it to work.

It could be that the "tough stains" are mildew. In this case, you will need to use some bleach. When I am cleaning badly stained non-skid or mildewed fiberglass, I use a mixture of 30% bleach, 30% Simple Green, and 30% water. This is the strongest mix and you can cut back on the bleach if the boat is generally clean otherwise. Be sure to wear gloves and safety glasses might be a good idea. Put some on with a sponge, wait a couple of minutes and scrub and rinse. For the most part you should not have to scrub too hard. Please be advised that using this concoction will eventually destroy any synthetic sponge, so once youre done, throw it away.

AJAX, COMET, etc. really easy getting out stains. Then follow up with boat polish.

Thanks guys I used the Cif (as its now called) and the stains came off a dream.
Many Thanks again