one think i have learned from seminars and just out in the feild, and it has chaged are duck spread completly, we use about 30 goose decoys and 5 to 10 ducks, with the goose decoys in the front were u want to shoot the birds, and put some ducks of to the side, this is because ducks love to land with geese. Ducks love geese, geese hate ducks.. is wht i have learned. they feel safer because they can get up and fly alot faster then geese.