The investment in a dolly vs tow bar setup is more reasonably priced. I did some figuring the other night and even with picking up a new tow bar for 300 bucks:
TOW BAR,it still would cost a total of around 1100 including brakes. (tow bar:$300, brakes:$500, base plates:#300) plus installation. I
might be able to do the installation myself,not too sure about that.
The dolly we are looking at is here:
TOW DOLLY No installation needed and has the potential of having other uses other than just towing a toad.
I also looked at the Acme tow dolly because it is in the ballpark price wise ($1750 shipped).
Anyway..we will be going to look at the used Roadmaster dolly I linked to today. :)