Wow what a topic and photo to see when I'm dead drunk. I have no idea what this contraption is. I can't even begin to guess what it is. All I can say is that SxS owners are taking their machines to levels they never were intended for, and sometimes succeeding! It's like the time I had ridden to the top of Montana Mountain, AZ, and felt like I accomplished something big, and here comes a Polaris Ranger with 6 people in it, including two 70yo old men laying in the back cargo area, and it had come from the opposite way, the most difficult hill climb. It's just one example of people doing big things in SxS's.
OK, I'm sure I'll read more tomorrow about what this contraption is tomorrow.