As long as they are smaller flocks of geese you might be able to call them in with just 2 dozen decoys. If the geese are real high up then you don't have much of a chance of calling them down. I would also try to use a flag. That would probably help you a lot. When I call geese, I try to do what they are doing until they get real close and then I do the feeding call. If they are not calling at all I will not call that much (just a few honks). Then once they get close I do the feeding call. Duck decoys will not help bring in geese from what I have seen. If there are ducks that fly over, then you could put some duck decoys away from the geese, but make sure they are still in range. Hope this helps and welcome to the forum. 