Painting not counted. No drawing was used. A broken gardenchair saved a lot of work. Works fine, easy propelled, light, takes waves well and all. There is not room for much gear like sleepingbag, tent and such.
Maximum speed is maybe only of an ordinary kayak.
But for sneaking or exploring where nobody else can go or turn it s perfect. Simplest stich and glue. 4.5 mm birch plywood was bent or twisted where possible. No internal strukture was needed. This design is easy to alter to fit everyone.