although I am far from the covering process in the construction of my kayak I wonder, do you have to go through the process of completely wrapping the frame in canvas, on the page for the WA1URB it looks as if he has covered the hull with canvas and the top will be covered with another material? can this be done? what options are there for this? I also want to keep the cost down, so I would like to avoid expensive materials for covering it. what do you all recomend?