Has anyone hunted Dove at the LBJ National Grasslands? I went yesterday and settled in at the clear lake area of the park and set up some decoys. I stayed from 3pm to sunset and didn't see a single bird. What are the best areas at LBJ for dove and where else is there to hunt dove in North Texas that doesn't cost an arm and a leg?

As a preemptive question...Where's the best place for duck in North Texas?

Thanks in advance for everyone's input.

Anthony