You could just reach out and touch him w a premium load of 4s or 5s how does the saying go "this will be the last time he hangs up at 50 yards"! lol I'm only kidding the ethics police will be all over me for that. But in all seriousness possibly try an unconventional set up closer to where the bird typically struts or enters and exits the area just getting your decoys closer to him may be all you need or simply intercept him naturally traveling. The best way to kill a big bird decoy or call is be where he already wants to go makes calling and decoying them in much easier.