Securing Generator To A Cargo Carrier On A Receiver Hitch

2) I would get nervous with a 100lb generator plus another 100lb of gas...that's a lot of weight and the back of a trailer can move around quite a bit on rough roads.
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The gen weighs 80 pounds and the gas can 40, so 120 pounds not 200. And what are those carriers designed to carry, feather pillows? I usually see big ice chests full of water and cans.