Definition of "boondocker"

The correct method is to crawl out flat on top of the line, balancing yourself with one heavy boondocker boot hanging down as a counterweight. Then you let loose, and swoop!

1967, Erick Berry, Underwater Warriors: Story of the American Frogmen, page 9

While these no/low-cost opportunities exist for freedom camping in the US, there is also a vast array of commercial sites offered by federal agencies at tariffs acceptable to the boondockers.

2018, C. Michael Hall, Dieter Müller, The Routledge Handbook of Second Home Tourism and Mobilities, page 324