The small lake south of Dawson off of 31 has 1000+ teal and big ducks, the SW side of Navarro Mills Lake at Liberty Hill State Park is holding T and big ducks in adequate numbers to hunt.
The small lake next to the cemetery near Spring Hill (burial place of George Washington Hill) has a significant number of birds holding till sunup and throughout the day. If you hunt private near Corsicana that should tell you what you need to know. If not, ask the locals at the DQ in Hubbard.
Do you ever get the feeling you're being watched? Because if you do, I'll stop doing it.