For years I hunted a small oxbow on a small river. While I have more decoys than most normal people, it depended on how many birds were in the area. Sometimes 4-6 floating geese alone and sometimes I would use 1-2 doz outlaws along the bank with them. A few ducks never hurt, 6-12 maybe, but remember, ducks will come to geese but not always the other way around. My experience anyhow. If your goose hunting, you don't need duck decoys. As far as a call is concerned, get a dvd called "Bad Grammer" It will walk you through using a short reed goose call. Many good ones out there. Bill Saunders, Tim Grounds, Fred Zink and others. I collect the dang things and that's one of my other bad habits:rolleyes:. I also make my own. An easy-to-use flute call is the old Big River originally made by Mick Lacey and produced by another company now. I've killed many geese with one.
