Cullen, I think the only way you'll stop the geese from eating the fish feed is getting rid of the geese via several different methods.
A friend of mine had a geese problem at his office that bordered a stream, and he had always cut the grass adjacent to the stream. He was told that the geese feel safer when the grass is cut, and thus will stay in that area. So my buddy doesn't cut the grass there now and the geese have left.
I would certainly not want to waste feed on geese which I consider a 100% nuisance creature.
