Called Fantastic Fan regarding the use of and:
Daytime: they suggested cracking one window on the shade side 3" and set the fan to blow outwards.
Night: Reversing the fan and having it blow cool air in.
I did some testing of my own with a thermometer as I really was not happy with the fan dropping the temperature. It took a few hours but got it set up the best for the 13 foot trailer...
In the heat of the day blowing inwards did little.
Reversing was also not very effective until I played with the windows
For Best results and drop in temperature:
I found that the air flow was best and temperature dropped the most when the 2 side windows
remained closed entirely. Then I cracked my door window open as much as I could (about 3-4"). The flow of air was drawn in through this window and out the fan creating the most movement of air. I believe this would also be effective using the window above the stove but I do not have one. You can actually hear the fan speed change by changing the pressure in the trailer with the windows
opening and closing.
By using the door window instead of the side windows (by the table/bed) I was able to drop the temperature by an additional 3-4 degrees.
This was all done on setting "2"