All of the sloughs have been frozen since Thursday morning and most of the big waters froze this morning. With 45 temps tomorrow and Tues, 55 on Wed, and 60 on Thursday; I think you will be seeing open water down here unfortunately. On a positive note for you, we have seen extremely dry conditions since late July/early August in this part of the state. I am willing to say that most of the sloughs you plan to hunt will most likely not have water in the cattails. Lots of streams are bone dry and medium sized sloughs were only inches deep by the time we hit big water for ducks.
Good luck, shoot um up