Its gel coat and poly. Layers depend on the area and the hull. I am trying to make a good balance between strength and weight with these. I don't want to risk strength to reduce weight when possible. Now if someone just needs an ultra light layup, and cares not for long term durability, I will consider it. Just a big investment to not get a quality piece ya know.
The yellow 40 tunnel is finally wrapped up. I have been out of town, and busy with other orders when I got back. I am finally getting all the ins and outs figured out with the builds now. Aluminum plate is added to the inside of the transom too, as well as foam is being bonded inside with 5200 adhesive, hopefully reducing risk of sinking if something where to happen.
This is the only one I will probably do with a colored bottom. The option ads weight as I have to spray the color, and a backing gel coat color (white or black depending on the hulls color), so you end up with twice the material for the sake of a colored bottom. To me, not worth it, but it was a request. So from here on out, colored tops are available, but white only on the bottom, or black if need be. Here are some pics. The white 20 will be wrapped up tonight more than likely as well.