It's front wheel drive so it would be appropriate for a dolly. What was the pros and cons of the invesibrake system and/or the benefit of air controlled brakes? Thanks for your response!

Is your traverse all wheel drive or just two? I don’t know anything about 2009 but I flat tow a 2012 SRX with my 2017 Quantum WS31. Cadillac warms against towing an all wheel drive with two wheels off the ground.
I had roadmaster base plates installed with the roadmaster braking system. I purchased the tow bar and invesibrake system used, planning to using the invest I rake but the service man explained the pro and cons. Glad I went to air controlled brakes.
Currently on my first long trip with the toad. Only draw back about flat towing is you can’t back up, especially when you come to an 8’ foot rail underpass in Needles CA.