I tow a PT Cruiser, and I use a Roadmaster shield on a Blue Ox tow bar. I fabricated some adapters from angle iron for the Roadmaster shield mounting brackets. I made the brackets so that the shield will ride as low as possible to protect the gravel pans below the bumper.
We towed the car to Alaska, and I found that unless your shield extends completely below the bottom body panel in the front of your vehicle, you are going to get stone nicks below the bumper. If you haven't covered that area, you may want to extend the shield.
Also, watch for damage on your rear doors and side panels. They will be nicked by stones thrown up by your tow vehicle's front tires. Either install large mudflaps or have the 3M film installed on your rear doors and side body panels.
That's input after returning from Alaska.
Good luck and have fun.
W8RLM - Bob
2006 Winnebago Journey, Model 39K, 2013 Dodge Dart