Usually to tow trailers commercially, one has to "lease in" to a firm that has the federal and state licenses. Contact those firms and see if they are interested in you and your pickup. They will give you the legal, physical and experience requirements. Big Duallys are usually limited to travel trailers, office trailers, flatbed trailers hauling trailers and/or pickup caps and horse trailers. An alternative is to work directly for a manufacturer of the trailers and haul exclusively for them. That always means lots of "dead heading". Some states allow 10 ft. wide trailers to be hauled by Duallys while most limit them to 8 ft. wide trailers. A relative of mine was in this business for years. The professionals have their Duallys custom built with special rear axles, transmissions and diesel engines. He told me to make any money at towing, one needs a co-driver, a small sleeper bunk and a big bladder.
