It was flopping on the drive to Walmart so I ended up screwing the side flaps down fer the moment. Seems to have eliminated the flapping fer the moment. Will need to come up with a better solution in keeping that back part tight/flat. Maybe a wire cable going across and secured on the sides of the flap doors. I know I don't want to use a bungee cord as the sun will kill it in short order.
I'll need to put in a ½" Sch 40 PVC pipe under the front top panel to give it better support and arch it to the cab's arch. This should give the soft ducktail a closer angle to follow to the aero cap.
Time to git some rubberized spray and apply it to the window screen so it doesn't leak down the window. It's projected to rain tomorrow...
