RockyMount
To the original question: I have had a good experience with RockyMounts monorail on my SUV. I generally haul 2 bikes and found it difficult to avoid scratches and a bit time consuming putting in and taking out inside the vehicle. The hitch mount and bikes are quick on and off with no scratches. I particularly like the easy tilt down. The cost was a little less than other hitch tray mounts with similar features.