I have to agree with a lot of what nchawkeye has to say as well. Only I still would plan on going in around 6 in the morning and hunting until at least 12:30 or so.. I would also be looking for some fresh hen droppings. If there is hens there is toms around. I would then find a place to call from. Only call once or twice per half hour. A tom can hear you and knows where the call is coming from. I would also be looking for some sort of small clearing where a tom can strut while staying back in the woods on you. It could be just an old logging road if you have them there. It does not take much of an area for them to do their thing.. I have only heard a few gobbles the whole time hunting here as well. I even watched one come in from around 400 yards away and no gobble from that one.
Good Luck on nailing a bird..