When I was talking about spinner bags on here a couple of months ago, someone mentioned that rather than a spinner bag, I should consider an aeronaut and a folding luggage cart. Which I am considering.
This might be a silly question but: What the heck do you do with your luggage cart when you are boarding the plane? It seems like an odd thing for the airline to let you carry such a device on board. Do you fold it up and put it in the Aeronaut? Would it not add significant weight?