For years the accepted wisdom was “do not put a hitch on the back of your Airstream”. The main reason offered is that the arm/moment that far behind the axles leads to excessive loads which will damage the frame and/or cause shell to frame separation.
The Fiamma rack that Airstream now sells/installs gets around that by also having an attachment point on the semi-monocoque shell.
Having said that, there are folks (hopefully some will weigh in) that have done exactly what you propose to do with no ill effects.
Personally, I wouldn’t do it. I figure that if the Airstream engineers went with the Fiamma, there was a reason for it.
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Sorta new (usually dirty) Nissan Titan XD (hardly paid for)
Middle-aged Safari SE
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Dismissive cat
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