Greetings everyone, I have finished with filling the canvas on a Racine canoe, 16.5' long by about 60" at its widest beam. I am getting ready to paint but don't really know how much to purchase. I am planning on using Interlux Brightside with the primer and sand between coats. As this paint can be fairly pricey I was looking for your assistance in what volume I may need. Thanks very much in advance.