I use a Roadmaster towbar system. I like not having to load and unload a trailer or dolly. I chose a vehicle with the ability to be towed four down.
If you have a vehicle that is not able to be towed four down, you may look at a dolly. If you decide on a dolly I would suggest putting a light trailer hitch on the toad so you can move dolly around with it.
A towbar setup requires brake lights to be on the toad. This can be achieved in different ways. You can wire into the toad's brake lights, add magnetic lights either wireless or wired, or add additional lamps and sockets. I wired into the toad's system with diodes as designed by Roadmaster.
No addition lighting is required when using a tow dolly. The lights on the dolly is sufficient.