Depends on how high the vegetation is. I put the decoys straight on the ground with a stick in the clip so it won't fall over. About 4-6 sitting there looking like they are eating or standing with a couple of Mojos coming into the wind is how I set up in CenTex. Works like a champ if you are where they want to be. Just don't shoot your dekes. birds will land right inside of them.
Hope this helps.
If you won't stand behind our Soldiers, Please feel free to stand in front of them.