I'm going to go take a picture of our trailer door latch. Featherlite rear door doesn't swing back against the side like a Wilson.
We have never had a door, rear or inside, come open on our Featherlites, and we have pulled one since 1999 (wow, how time flies!)with cows, horses and mineral. We paid $10,000 for it and traded it in 2014 and got $11,000 for it on another Featherlite (used 2013). We had a 1998 Wilson but it was low to the ground for some reason, not sure why, as we see others that aren't that low. It was used slightly when we bought it. We hauled a lot of mineral on small pallets and the floor just didn't work for that. Mr. FH used a cart and a ramp and the rises in the floor made it very difficult. Then we had some problems with it, brakes, I think and the rubber bumper on the back started to come off. We took it in to be repaired. The dealership loaned us a Featherlite to use while they were fixing the
Wilson. The Featherlite fit our purposes better so we called and made the trade. Never went back and got the Wilson. Mr. FH really did like that the door swung back against the side on the Wilson. It doesn't do that on the Featherlite.
The 1999 Featherlite had the slider door at the outside rear, but we changed that to a roll up door. Liked it much better and
it was much more quiet. Just generally worked better, for us anyway. Maybe not so well if you are hauling saddled horses a lot.