I知 interested in trying to modify an older bike into a two wheel mule. The NVA managed to move millions of tons south on your basic bike during Vietnam by slinging it over the frame, putting a stick on the handle bars and start walking. I知 trying to get a little more sophisticated than that, but not much. The goal would be to be able to sling a 60lb pack or two and/ or meat bags on the bike without jamming stuff in the wheels, sprockets etc. I知 not really interested in riding the bike, just using it as a pack mule. Any experience, idea or photos out there?