"...and a 4x4 beam as a tiedown? No. Heck no. No no no. Holding down some dirt, and holding down a bucking, bouncing, bounding camper are two entirely different things. One of them is a good place for a piece of wood, the other is not. We build houses and barns out of wood because they are not going anywhere. It's bad enough most RVs are framed from wood. We don't need to be securing them to the vehicle with even more wood." The amount of bouncing and bounding that would break a 4x4 beam would more likely shatter the connecting points on the camper or the camper framework itself first. It worked fine for me, particularly as a temporary measure.