Somewhat like hunting/shooting difficult in our state to find a place to use ATV's unless you own a large ranch..
I have been deciding on weather to buy a side by side ATV/UUV. Maybe a Kawasaki Teryx or Polaris RZR. Its more fun to take friends out. I think it would be easier to spotlight hunt at night.
Mrs. Thumper and I just bought a pair of 2009 Honda FourTrax Rancher AT's on Saturday. Gear Driven Automatic Transmission (which can be switched to manual electric shift with the flip of a switch), front and rear independent suspension, 4x4, fuel injection, and liquid cooled. Awesome machines.
We ride mainly at the Canadian River between Amarillo and Dumas (pics above from Canadian River in an area known as "The Meadows"). I hear there's some ATV trails at Lake McKenzie now. Looking forward to taking them out in the snow in the winter.