Never really thought of myself as a Boondocker, but I guess I am. We camp in national camp grounds that have NO services, we typically camp next to the ocean which provides good breezes and lower temps. If it is hot we run the big Onan for the AC but do it seldom, most of the time we want good power for TV's, fans,coffee maker, battery charger and lights, we get this from running a little Onan 1000 Watt portable generator. The small generator runs for hours on a gallon of gas, keeps our batteries charged and does not heat up the coach, it is also quieter then our big generator. I have noticed over the years of attending the EAA Airventure in Oshkosh Wisconsin that many big rigs have a small geny next to their rigs ,undoubtedly for the same reason , you just can not run a big generator economically for 500 watts of needed power. I am not suggesting that this is a good fix for a hot night in a Wall-mart lot, but it works great for a long stay if AC is not required all the time. My rig is diesel but has a gas Onan, The gas tank holds about 25 gallons I carry one 5 gallon portable gas can that I can fill from the big tank if needed (little squeeze pump siphon hose works great) I plan for about 1 gallon of gas a day but rarely use that much. Other bonus of having this little generator is as a backup, so when your electric fuel pump goes out to lunch on the big unit you do not have to interrupt your vacation. I lost my fuel pump on the way to Oshkosh last year, (bought one at a parts store) replaced it and had the starter go two days later (good thing the big geny is almost new). ran little geny as needed for the next ten days with out missing the big unit at all!