I've gotten on the cimarron river at coyle and driven to Ripley. Almost ran out of gas due to being in 4 lo all day and spinning tires. probably would have run out of gas but when we ran out of beer we started making better time. Also driven from Perkins to Coyle a few times. I wouldn't do it alone though because it is pretty easy to get stuck.
I've been on quite a few private property places too.
With Lake Carl Blackwell down about 8 feet it has exposed a lot of rocks and stuff. Somebody should go down a boat ramp and see how far we can go around the lake.