Cool man, haven't seen but a couple when i've passed through the refuge on my way to the coast!
If you can, hit it during the Summer around the end of July. For some reason I see a ton at that time, but you have to head out either early AM, or dusk to catch 'em out feeding. Take good bino's, they are very used to cars and often you can spot a good buck by taking a bicycle along and going real slow, looking out in the tall grass. Sometimes you'll just see an ear, or a small piece of antler at 3-500 yards, but eventually they'll stand up if your patient.