[Yosemitest]

For hot climates, one of the best things you can do for a mobile home is to build another roof on poles above your trailer, and most people make it wide enough to park a car in front of the trailer and behind the trailer sides.
You need about 2 or 3 feet of clearance between the trailer roof and the pole roof, so as to allow you to check the roof of the trailer and allow air flow.
Then during the cold months, you can get some 20' x 100' plastic rolls and tact it to the pole roof to make walls around the sides of the trailer, to keep the cold wind off, and the sun will heat up the air behind the plastic.
Leave the ground edge of the plastic loose and just lay items on it so you can lift it when needed.
You can double flap a vertical slip that overlaps for a door.
With high electric bills, the plastic should save more on your bill than the cost of the clear plastic.

[outofsalt]