Another hour or so of sanding gave me a hull with smooth side skins trimmed to the bottom skins and the deck level. Next I added the transom and the bow block. Unfortunately, the provided block was a couple of millimetres too narrow for the hull, probably due to my (lack of) building skills. Fortunately, I had a suitable sized block that I had bought, with others, from a bargain bucket at Wings and Wheels a year or so ago. I knew they would be useful one day! Then another bout of sanding the transom and carving of the bow block gave me a basic boat hull.