A Casita group has been doing one for several years now through Southern Utah, but they limit the number of trailers and it fills up quickly. So far it's been working out, but don't know the particulars of how they run it. I think some of them will be at the Quartzsite gathering, if I can find them I'll ask how they do it.
I have talked to someone who was in the Utah caravan. They thought it was great. It covers territory where we have been but others would probably love it.
There may be two caravans next year with people on FiberglassRV, one to Alaska maybe and one to Newfoundland, already full I think.
__________________
Cathy. Floating Cloud
"Live in the sunshine, swim the sea, drink the wild air.... "
Emerson