Follow the hens they will lead you to the gobbler, he may have roosted farther off and is meeting the hens in the strutting area where you hear all the noise, gobblers don't gobble very much when strutting they are prob. following a hen around hoping to mate and probably matting, fighting, strutting. Gobblers mainly gobble to attract hens to them if the hens are already with him he may only gobble to call another hen to him if she calls. I found this to be true many many times. The hens make all the noise in the strutting area.
I would follow the hens then when you hear more hens use a locater call, you should get a gobble in return.