Two ideas here, one is the cover is universal and can be installed 2 ways. Both of mine I installed with the latch screws facing the tow vehicle, screwed tight and have not lost any flaps. The cover itself can be lifted easliy so a bungee cord across the bottom secures it.
These covers are shipped inside the trailers and installed by either the owner or Dave, the delivery person. They can be reversed.
never in doubt, often wrong