Why flat towing rather than dolly? Less wear and tear on the front end and probably safer. Without the lights the dolly should provide you will have to wire the tow vehicles lights up to the towed vehicle. Seems like a lot of trouble. You can purchase your own dolly if you plan on lots of towing. Designing and building something that would safely tow your vehicle would require good engineering and welding skills. In the 1950’s my father, who was in the Air Force at the time, I vented the tow bar that would attach directly to the vehicle being towed. He called it the Universal Tow Bar. Because he was a government employee the Air Force gave him credit for it with the gram sum of $25 and of course the idea became property of the Air Force. Just think how many are now using versions of that same device. Another one ferreting trivia fact is as a child my father new the person who invented the fifth wheel. We lived there Nashville at the time and it was around 1968. Anyway, good luck. There may already be something like that available.