I looked on Ebay and found carhaulers in the $1800 - 2500 range so I guess it depends on the tow bar and braking system you buy whether it is competitive. I realize you have to keep up two sets of tires. I'm not sure what the trailer would weigh but I think I would be safe with the 10,000 lb hitch on the coach to tow that way.
However, the folks I have spoken with has encouraged me to flat tow so that may be the way I go. I liked the simplicity of the hookup of going with the trailer in not having to mount the tow bar and the fact I have heard of some of the braking systems locking up.
Thanks for your response.