Add-A-Wall Installation - Clear Flaps on Inside or Outside?

I recently picked up a Forest River Add-A-Wall that I need to install. The OEM version has solid white vinyl on the bottom and screen on the top. There is also a flap of clear vinyl that can be rolled down to cover the screen portion to protect from wind/rain. My question is whether the clear roll-down flaps should go on the inside or outside of the trailer. It wasn't specified in the instructions and I've found a few pictures online of it installed both ways. I can make logical arguments for both. Installing the flaps on the outside would allow any rain to drip down outside the trailer but I'd have to go outside to lower them if it started raining or I just wanted to cut down on the airflow through the screen. Installing with the flaps on the inside would make raising/lowering more convenient but I'd have the potential for rain to drip on the inside. Of course, if it was raining, I'd most likely have closed the ramp door anyway.

Can anyone tell me how theirs is installed and any positive or negative experiences? Also, pictures of how it is installed along the top and sides would be greatly appreciated.

Thanks
Jim
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2012 Toyota Tundra Crewmax
2013 Forest River Stealth SK2112