You could modify a Manta Ray[0] to accommodate the over-one-shoulder position. But it seems like to problem isn't well defined. There are a lot of problems tha

You could modify a Manta Ray[0] to accommodate the over-one-shoulder position. But it seems like to problem isn't well defined. There are a lot of problems that shoulder poles solve. "Moving stuff cheaply under human power" captures a lot of it, but I think that the designers might have defined them selves in to a corner by saying that they want to make a monotonically superior tool. Pick one problem and solve just that one problem in a better way. Maybe that's the lesson though. The shoulder pole is a really awesome piece of tech. [0] http://www.amazon.com/Advance-Fitness-Inc-4662-Manta/dp/B0017DGBY8 http://www.amazon.com/Advance-Fitness-Inc-4662-Manta/dp/B001...