I'm not that tall (176 cm or 5' 9") but also have the same problem with bass gig bags when I put them on my back. Maybe we should start putting them on upside down? (Just got this brain fart so I had to try it. It worked well but looked rather stupid

). Maybe someone should contact the manufacturers of the gigbags to see if they could do anything about this problem? It is pretty annoying. I haven't seen a good one yet, but I admit I haven't looked carefully for one either.