Roof Air Conditioner For Rv

How can i keep my RV cool in the summer?
What are some effective and efficient ways to keep my RV from getting too hot in the summer? I have an air conditioner, but I don’t have a generator, so i’m looking for ways to keep cool without electricity. At most maybe a box fan. The only thing I have found so far, for example, is KOOL SEAL roof coating which says reflects the sun’s rays and cools the RV by up to 35%. Any other ideas, like where to position the fan, what windows and vents to have open, etc.
Kool seal’s a great idea. Go solar, two panels on the roof will power fans to blow the hot air out. Park so that you get the afternoon shade on the side of the rv that does not have the roll out canopy and of course roll out the canopy you have, if not get one. Avoid cooking with the stove inside get a portable to use outside with an extension to your outside propane tank. Add insulation, sometimes an older rig was remodeled and insulation was removed due to water damage. There’s also small portable swamp coolers that use way less electricity then an ac unit and could run on solar power get one of those. if your hooked up to water get the water misters that hook up to a hose and put those near windows that the breeze can blow through. finally when you just get too hot role down the window and move on to a cooler place that’s why “that there is an RV Clark”, you can take your home and roam.
http://www.rvsolarelectric.com/package.htm
http://www.nextag.com/portable-swamp-coolers/stores-html
http://www.shadeusa.com/misters.htm
http://www.koolseal.com/product_family.asp?family=elastomeric
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