I ended up buying a carboy bag from B3. It's much like the BrewHauler but has longer handles and black heavy fabric that covers the carboy. Being a bit weaker than you guys, I found I needed to move my carboy by placing both handles in the crook of my arm (inner elbow) to safely move the full carboy from place to place. I would find it very hard to have one hand on either side of the carboy as in a milk crate or short-handled hauler and try to walk with a full carboy (too dangerous for me!). I contacted the BrewHauler folks about a year ago, however, and they said they could make the handles to any length I specified. When I need to get a new hauler, I plan on going that route as it's a bit cheaper than the carboy bag. I do like the black fabric cover on the bag, though.
Gail