All my designs can also be produced in the Expanded Polystyrene cored, paulownia timber veneer construction method. The stringerless core is an extremely light EPS, about half the weight of a conventional EPS blank. Longitudinal strength is achieved by laminated timber rails and epoxy used in a special process to veneer the top and bottom sheeting. Costom orders only. Either glassed on fins, FCS 1 or FCS fusion. Gortex ozmosis vent in the legrope plug.