Steamroller is right on the money about loads - I used to sell utility trailers and car haulers. A car goes fine on a steel-floored car hauler, but put anything else on it (like a skid loader, a farm tractor, or palletized cargo) and it will slide like crazy if there is any moisture on the trailer or tires! A very dangerous situation! A steel-floor car hauler may look cool, but is considerably more expensive to build and your lack of versatility in hauling loads severely hampers your ability to do much else except look good! A wood deck in a truck bed or a trailer is far superior in most hauling situations...Look at U-Haul trucks - wood decks!
Plus, when replacing wood in either situation, the expense is considerably less overall, especially since the cost of steel has gotten just plain stupid in the last year!
