When turkeys aren' t sounding off I try one of two things. [1] I will go to an area that I have seen turkeys in the past that are strutting areas or feeding areas. This becomes more like deer hunting. Call every 15 minutes or so and keep your eyes open. If the birds are not talking too much they might be on top of you before you know what happened. [2] Get on a ridge top or along a log road and cover a lot of ground stopping every 100-150 yards do a lot of aggresive calling. You may be able to get a tom fired up especially later in the morning or in the afternoon when they get away from hens. If you do get one to respond then get set up a quickly as you can because he will likely be looking for company. Good Luck.