As seen on the attached pictures, moulds are standard tooling gelcoat, 2 layers 100g chopped  strand, 3 layers 200g chopped stand, polyester resin. We'll see what the paddle will look like but I am considering to maybe do a flat paddle. I just wonder how to give the required stiffness when under load. I'll do my homework and find the solution (add many layers of carbon fibre? Laminate layers of carbon fibre interspaced with aramid? Required thickness?).