www.trh-cycle.com and look for info regarding skull creek. 3,000 acre private riding area lease maintained by the Trail Riders of Houston Club. Skull Creek is on the SW corner of Hwy 90 and 71; south of Columbus TX.
I know I'm only 5 years late on this but I live right down the road from Sour Lake. If you still get on here and you're still in the area, let me know.