stop jump shooting it for a start. sounds like thats a place they are roasting on so you dont want to disturn them. wait for a realy wet and windy day then go down and scare them all of it before 1st light, get camo'd up and ya decoys out then ...wait. eventually they will come back, could be at first light or at last light. another option is to wait till they have left for the day to go and feed, then set up and hit em on their way back in
good hunting
good hunting