I had family up in Pampa, I remember hunting the playas, just big pot-holes of water scattered all about. Saw an article about the same hunting in wildfowl magazine a while back. Sorry I'm not too much help, but yes, there is excellent hunting to be had there. Another might be lake meridith, its the only real lake for miles and miles, and I would immagine a good resting spot for birds on the way south.