What is the best way and least expensive way to build a leaf box on a trailer so I could use it the rest of the year for the usual equipment. It is a small trailer 5 x 10 with 2' sides. I am thinking of having a different gate made in place of the drop gate to hang a leaf loader on such as a Billy goat ? I think in the long run it may be the most profitable way to go and may give me an edge over the competition. If I can make something as far as a temporary type box to fit on this trailer for leaf season then remove it after the fall season is over and use as an open trailer for lawn season it would be great . Any good Ideas ?