I have family out there and have goose hunted the area for the last 9 years. The birds move all over this part of the praire on a daily basis as they eat through the winter. From the birds perspective you can lump the praire south of I-10 between Sealy and Eage Lake together. Obviously not 1 roost for all of them but they'll generally be in the same area or at least on the same food at a given time.
Like always start on rice (decoying young birds well) and work your way toward plowed ground (decoying/pass shooting) as winter progresses. Duck hunting can also be good depending on where you are but I like areas closer to the coast for ducks.