Rick N6BK uses this method to erect his tower and has been kind enough to describe the method at http://www.n6rk.com/falling_derrick_gme/falling_derrick_gme.html. I would only suggest that when the tower is erect your car/truck should be at least the height of the tower in feet plus a few feet from the base of the tower. Happy Erections! 73, Art W6KY