[OKDXA] Question on Field Remote Operation in Oklahoma

[kodiak]

Folks:  Wanting to get away from the city noise for a late evening
and setup in the field.  I have a capable off-road outfitted Jeep, and have
a drive-on tire mount and mast to raise my Hexbeam in the field.  I was
looking at State Parks,
but not sure if they allow that type of thing, and want to avoid curious
people wandering in while I'm operating. Wondering if there is any public
State or Federal land that is reasonably accessible within a 3-hour drive
of OKC that can be used for a short term amateur radio setup, I don't mind
seeking prior permission. Anyone?  Thanks in advance.

Brian, AA5H