Best way is to just head out when you are ready, and then follow other BMW's in to campsites or motel parking lots.
You will also meet some at gas stops and food stops.
We have a our FRS radio channel number (10) on our top box, that's always fun.
James and Colleen Tucker.
Aut viam inveniam aut faciam
Beat our time, Los Angeles to Ushuaia 70 days