When we eagerly removed the swinging arm for the door (months ago) we had no idea that driving would be such a problem. Even with bungee cords and rope securing it as tightly as possible, the doors still flapped around on the road. So while our long term solution is to build a proper door, today we came up with a super simple (but very effective) way to keep the doors secure with some basic hardware from the home improvement store. See the photos for details. It’s always the simplest solution that works the best!