I have ran both ways....We call em sideboards around here (LOL)......It really doesn't make much difference in my opinion as they both have their advantgages........Sideboards do allow you to haul more scrap at one time but can get in the way doing other things.....Either way it really depends on what your focus is....I don't really need em to haul ewaste but when I hauled alot of heavy scrap they were worth it