We have the 1up rack behind our Pinnacle. It works well, however, the receiver sits fairly high on the Pinnacle and it is a bear to load the 2 65+ pound Ebikes. Yesterday I ran into this company on Facebook, called suweeka. It makes loading bikes a breeze, electric powered, meaning a drill and socket adapter. You can buy a single or dual bike unit. The two bike unit can haul 240 pounds. They are certified for 5th wheels, not TT's. They are made in Oregon, not foreign. Only downside I see is the price, $2600 for the 2 bike unit. Anyone interested in a bike rack needs to see their short video. I am already thinking of selling my 1up as this rack takes all the stress of your back lol.