I don't like "soft" boxes and the hard box is too large for my liking. What boxes have you adapted to the rear rack that works well? I am considering the Rubbermaid 48 gallon box. http://www.uline.com/Product/Detail...gclid=CNzAkYKF9sACFQxp7AodQH8Azg&gclsrc=aw.ds Dimensions look like it would be a decent fit and is less than $80 at Walmart. Some bracket clamps and should be good to go. I have used the smaller version in boats and have lasted a long time.