RE: Question?
First thing in the AM I'd give it between 1-2 hours. Then depending upon whether you have room to run/gun or not, you can plan what to do next. If Ihad only a small area to hunt and didn't have another spot to try, I might just sit tight past 2 hrs. Later in the day, you want to cluck and yelp like a hen coming off a nest.
It's great when they gobble, but just because they aren't vocal on a given day does not mean they aren't there. Sub-dominant birds often sneak in without gobbling too.