We are heading down south in a few weeks. Not sure what you call it but has anyone used the plastic film that you put over windows & heat it with a hair dryer to get it to stick. You buy it from Home Depot or Lowes & usually use it over windows in the winter to keep the cold out. Our AC runs non stop & really has a hard time keeping the coach cool because of the large windows. Last year I bought a roll of insul. that you put over windshield & put over the windows but it makes it too dark inside. Just wondering if that would help at all or should I just stick with what I used last year. Thanks