Are you in the same spot every morning? Change it up. Get in there and put a few dekes up in the dark so that when first light comes he might be able to see them from his roost. Just before he flies down cluck and purr and then be quite. He knows where the hen is now he just has to come take a look. Another thing you might try if he is very big is a gobble tube. I would only use it right after he flew down and is on the ground. Only a couple times. See if that helps. Patience is a virtue, no patience is a pain in the a$$. Good luck