I am originally from Monett. I am very familiar with Table Rock. My parents have a house near Shell Knob.
I have seen a few ducks but mostly geese on the lake. I know there are a lot of guys that goose hunt near Big M and further up the arm to Eagle Rock.
As for ducks, there are a few rivers I might think about. Spring River near Sarcoxie (I think), James River Near Springfield, I don't know if the Elk River gets many ducks or not. We used to do a lot of pond Jumping north of Monett with pretty good results. Seems like they like I-44.
Stockton usually holds a decent number of ducks, esp when everything freezes over.
I have had good luck over by Carthage on farm ponds in crop fields.
Hope this gives you a little bit to start with. The closest waterfowl management area would probably be Four Rivers, north. of Nevada.
Rest in peace my friend... Mocha- Jan 20th, 2001-Feb 1st, 2009.