I hunt snows late winter along Delaware Bay, and the best call I have ever found, after some instruction by a local master, is a Big River flute style call(it is really for Canada's). You only blow the high note and need to get a cadence going on it, not too fast, not too slow. You cup one hand around the end and use the otherat kind of a right angle against the open end of the first hand. It works like a charm. I really don't know if it would work elsewhere, as our hunting conditions are pretty unique for snow geese. The idea is to get between two rafting flocks that sit along the bay shore or just back in the marsh a little ways and set up between them. You don't need a lot of decoys but calling makes a big difference. We get trading small flocks, singles, doubles, etc, and they will come to the call and a few decoys(I use a dozen floaters for ease, but twice that would be better). I don't hunt them in fields, only in the marsh and preferably over water, but I will sometimes use the call to get them close pass shooting off some of the local dikes if ice or weather keep me out of the water. About 30 bucks.