I have considered 4 down but I have more than one vehicle that I want to tow and I have been told that I need to get something for each vehicle if I go 4 down and with a dolly all I have to do is drive on it and go. I have a 89 Ford Ranger and a 2005 Chevy Trailblazer that I am planning on towing.
If the Ranger has a manual transmission, it is towable. If an automatic, you would have to load it backward and that is not reccomended due to the effect upon the front suspension. The other quesion is about the weight of the Trailblazer? You need to be sure that you do not exceed the GCWR for the motorhome with the total load.