If you "just" want to skin the wooden construction in CF/flax/jute, then go for a single layer of 200gsm.. one side at a time
Start off with a thin layer of the black coating /skinning base resin (for the CF), let it cure to a tack, to hold the CF fabric, and wet lay , and cover with peel ply.
Use laminating resin. You can also just use some black pigment in laminating resin for the first layer, it is just to make a black base for the CF, since a single layer can be a bit transparent/gappy
Wrap it with perforated release film and some old sheets or the like to absorb excess resin. Leave one side to cure fully, then remove all cover materials around the edge and do the other side.
When it has all cured, remove all cover materials and the peel ply form both sides, sand it down lightly and get a paint shop to clear coat the whole board.
If you want areas of the board to be really grippy, just leave those areas as they are straight from the peel-ply...
When they are wet, you will see the CF through the otherwise grey/matte areas, but they will still grip, until they are well worn ... I use that method on gun-stocks made from CF.. but sometimes apply a very thin clear coat to the rough areas.
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