The 21" and 24" SuperTruss (the two shortest models) only use one band to hold the upper and lower tubes together. These will be more squirmy than the longer ones with two bands, but will much lighter and easier to handle than the typical ones you see that are 3' or 4' long.
Mine is 28" long with two bands and the turnbuckles toward the rear for easier access.
My 7-pin harness was wired with a Y-connection allowing me to plug in the camper and my enclosed trailer at the same time, but I also ran a dedicated 4-pin for smaller open trailer instead of using an adapter. The Torklift connector plate allows mounting of both style connectors at the same time. It worked great with my Ford - My Ram only has a 7-pin, so now I have use a 7-pin to 4-pin converter when using my tailight or small trailer.