Originally Posted by CliftonGK1

Have you looked at replacing the canvas with a heavier gauge cordura? If you're handy with a sewing machine, Seattle Fabrics has everything you'd need for outdoor projects. (I'm getting stuff from them to make my own courier bag and commuter backpack, as well as some ultralight camping gear.) With some cordura, vinyl window plastic and sunblocking mesh, you could make an awesome super-strong top conversion for that trailer.