Double Towing with my rig (pics updated 5-13-2014)

Johnny - Looks good.

Aside from the licensing and robust trailer hitch issues we've been discussing here, the other recommendation I would make is to invest in a good quality, color and IR, wired camera for the back of the 5ver. I find my camera invaluable for keeping an eye on the back trailer and the contents, cover, etc. As an added benefit, it is very helpful when changing lanes since you can clearly see when you pass a vehicle or a vehicle has approached within the length of your rig.

Good luck,
Phil