I'm not so sure about the pit bull. I've hit some pretty big bumps with the trailer and it's right off the ground. How does the pitbull stop the bike from bouncing? I've seen an enclosed trailer on it's side sloping down from the road, harley strapped down inside almost upsidedown but completely unscathed. The pitbull would not secure any bike under similar circumstances.All good info here.
+1 on the soft-tie loops. Pit-Bull Trailer Restraint is the business if you really want to get serious.
The pitbull seems to me to be an overly complex contraption that barely does the job.