Why do you need a kayak for such calm water? Take a look at the Swamp Yankee canoe. This is a Wee Lassie type canoe that is made by a tortured plywood method and should be relatively easy to make ---much, much, less time than a stripper and very light besides. Don't have the address but can get it if you need it. The guy advertises all the time in Messing About in Boats.