Don't know if this will help you, but one trick I've learned is to check your map for parcels of land that are isolated in one way or another. One of the sweetest spots I ever found was a tiny piece of public land across a highway and on the back side of a small swamp and down a railroad track. Took about 30 minutes to walk in to it but that 20 acres was loaded with turkeys! Also, I have found spots where the National Forest is sort of "speckled" on the map. You know- a quarter of this section, 20 acres in that section, 100 acres at the end of that little road, a section off by itself, ect. These types of places seem to get less pressure- especially if they are relatively small areas on the "other" side of the road. I'll check them all out, but especially key in on the areas with a creek showing on the map, whether it has water in it or not. They just seem drawn to bottoms- wet or dry.