In that situation, decoys probably would have helped. If they saw the decoys, they probably would have flown over. Don't use decoys in every situation. I have had several times a gobbler that was gobbling like crazy come around the corner of a tree line in a wheat field that is about 150 yards from me. When he saw those decoys, they all would come running (literally), but stop and go into a full strut about 60 yards out or so. It is very hard to get them to come in those few extra yards to get a good clean shot. Decoys draw them in, but a lot of the time the bird will stop just out of range. It is like the now something is not right and wait to see if the decoys are going to move before coming in any further.