[sandy43]

I used to have something similar to what you describe. I found it shakes a lot and rough on the bikes. Whatever works for you. I ended up putting a cargo carrier in the receiver hitch, mounted an aluminum truck box in the carrier (for additional storage), and built a bike rake on top of the box. Very study and secures the bikes the way I like it. I'd show some pictures, but don't know how to do that.