There was a guy in pipe creek used or set a satellite
dish on a pole in a shallow cut and anchor
4 point alongside the satellite
dish all winter.
On a somewhat more serious note, Bernard Kohler has a 23' pontoon house boat design. Seems to me a much better idea than having and RV as anchoring
is usually free most place especially inland lakes but RV spots can be expensive in prime areas. Plan to do a Western US trip with the family
at some stage in 5 or so years.