I got a new bedroll bag that is black duck canvas. It is the same material as Carhartt jackets. I would like to waterproof it the best I can, just for when it is in the back of the truck. I've been doing some research on wax, 303 treatment, and oil cloth; boiled linseed oil and mineral spirits. I don't care how it looks, I just would like it to work decent and last if possible. Anybody have any suggestions?