If he is getting henned up on the roost wait for him to fly up with all the ladies one evening. Then once they are all in the trees go right under them and start yelling and screaming and scatter them to hell. The next morning he will wake up all seperated from his hens and he will be desperate to get back with them and as such will be much more responsive to calls. Get there plenty early and once he starts gobbling close the gap to about 100 yards and start calling. Little things like getting on equal or higher ground is important too. good luck with em!