RE: Curare construction ARG
Does indeed! That's a Curare.
Diego, if you're going to glass prior to paint, just watch the resin on the fin. Due to the grain direction of the sheeting, there is potential for the wood to warp (or sink) between the ribs under the heat of the epoxy curing. I'd suggest using cut back laminating epoxy (using 90%+ denatured alcohol) to just adhere the cloth to the fin. Once this thin first layer has cured, you can "re-paint" uncut laminating epoxy on to the glassed surface to make sure all the cloth is thoroughly bonded and whetted out. This should help to prevent the wood from absorbing too much epoxy at first and potentially warping.
David