Fiberglass stock finishes?

gelcoat or a self leveling epoxy. if you have the time maybe do some stippling with a ball dremel bit.

Jelcoat will have issues sticking to epoxy. I've been told by many boat builders/repairs that Jelcoat will not bond well to epoxy. Some say it will pop loose over time, in as little as 1 yr. I'm fixing to find out if the West Epoxy and their flaring compound makes it hold better. Epoxy is much stronger than the polyester and with all the additives you can add to it makes it very versatile. If your going to use Jelcoat you will be limited to polyester resin to get the best bond for jelcoat. Gelcoat is very smooth slick surface when polished out. There is some non-skid additives that may do what you want. Jelcoat and polyester resin has a odor that will make you head for air, so use in well ventilated area. Also needs to >70F to use polyester. Will need PVA if doing laminating (multiple coats) for not wax jelcoat. Need around 0.050" thickness with jelcoat it your going to sand/polish. Thicker and it will chip.

I'm in the process of restoring/rebuilding my boat. The reason I'm passing this info on.

If looking for something like a wood stainlike finish on fibreglass type surfaces, then it might be useful to talk to the folks in your local building supply store. Thermatrue and other type fiberglass doors are shipped sometimes unfinished and thus are finished to match onsite with their products.

I've found Marine-Tex to be practically indestructible on boats. Can be sanded, drilled, etc. They also have a gray version for metal which I used on a gash in an auto gas tank, held for years, sold it, probably still holding.

I wonder if you can use it for bedding?

There is a wrinkle type paint that's available from Brownells. I've tried spraying it on a few composite stocks, and then before it dried, used a hair dryer to get the wrinkles how I wanted them as for texture. Worked pretty slick.