Thanks for the thoughts guys. I didn't realize FMCA did publish that, and I'm in the process of printing right now from the web.
I had noticed in the two POG trips that jeeps seemed to be a vehicle of choice. In our group of 7 from CA and CO to POG3, I think 3 out of 6 towables were jeeps. I had really bad luck with a Jeep Cherokee in the 80's and had never purchased one like that since. A liberty is a nice size, and I know several of the group tow them.
Ray