Warm weather traveling

On both our prior MH's we almost always ran the genny while underway. When travelling it's not just the sun above that increases heat, it's the engine, tranny and heat from the road. The only way to combat this is to run the rooftop air. And your passengers will thank you. The ability to use the central air, microwave, watch a movie on TV etc are all the reasons we had a MH in the first place. It's a rolling apartment and all the conveniences available at any time. Fully self sustainable with your own power plant. There is no more comfortable way to travel. Your MPG difference will be negligible, especially compared to your comfort. Frankly I never understood the curtain behind the front cabin to use the dash air and the heck with the rest of the MH. Doesn't that defeat a lot of the reasons of having a MH? And depending on where you go, it will take hours to cool the rest of the coach down when you get there. To each his own.