I went to Texas Tech and hunted that area for many years, but that was quite some time ago. I remember having three seperate playas just outside of Shallowater TX. It was some of the best duck hunting I ever had. The ducks are there, you just have to find them. How to find a place to hunt?
What I did was about a month before the season I would take off and drive, I would drive all the CR roads and look for playas (ponds). Once I found one I would get in touch with the land owner and ask if I could hunt his place, nine out of ten times they said yes and it was free, I only paid once. I think your best bet is to get out and drive the area about a month before the season starts. I would check out the Shallowater area, abernathy,new deal, and west towards Crosbyton. The best areas were on the Northeast to southeast side of Lubbock. I wish I could tell you the exact spots, but I have forgotten the roads. Good luck.