One thing I noticed today when I was doing the experiment was that there is a lot of heat coming through the
windows and the area around the vent.
I just ordered some emergency blankets and I am going to use 1 or 2 of them to make inside reflective covers for the trailer
windows. To test this out, I will probably use cardboard backing and then glue the mylar to the cardboard and see how it works out on my next beach trip. I will also make something I can put up in the vent to block the hot air.