If you're coming down 77 to 250 into Cadiz (the best way), then you'll be going right past Tappan Lake. Like Schu said, I think there's some public ground through there. I wish I knew exactly where to help ya out.
Jay mentioned Salt Fork area, but that's kind of out of the way unless you're gonna go down 77 to Cambridge and then across US22. That probably adds 30 minutes onto your trip each one way.