I never used to bother using a J-hook much, because having my flight tote on top of my #rollaboard makes it easier to get my bags between the seats on regional rail #trains, but it's very top-heavy, tiring, and hard to control

When you have a long way to #travel, using a J-hook gets the flight tote down lower, and shifts the center of gravity dramatically, making walking much easier through #airports, etc. That's why you'll see all the flight crew members use them on their #luggage.