if they are going east off the roost,then you get east of them. then they will go west.

LOL ; if you have them figured,just go in real early and get set on them.I hunt the swamps of Fla. they fly down in all directions.sometime if I can find them over the river,then I know they will come my way to dry land.it is hard to figure the way they will land in the swamp.[:@]