Never, I repeat, never give up! I shot a 19.5 pounder at 5:30 in the morning that had 3 hens with him on the last morning of NH's turkey season(May 31st). I had hunted this bird for 2 days, had to head to Florida for business, and when I got back headed out to my field and got him!
The point I'm making is, do whatever it takes, hunt every single hour, just keep trying. Go to places where you saw birds earlier in season. The hunting pressure will be far less, the hens will be laying on their nests, and gobblers will be frantic in their search for hens. If you can, go to a high point on a field edge, or ridge, and listen for birds going to roost. This will give you a leg up on where they are. If you have to work during the week, before you go to work, cruise roads right at light and use an owl, peacock crow or any kind of locator call you can. Remember, birds are fickle, and what works one day, won't work the next. if you hear them in there, try to get in the next morning.
I'm no expert, and have far less experience then alot of the hunters here, but try these things, and best of luck filling that tag!
You can't kill'em sittin' on the couch!