I used to hunt public land a good amount for 2-3 years before I decided I was done wasting my time. I found that any gobbler that gobbled had a number of guys sprinting to it as it was a death sentence or at least an education. I would not bring a jake decoy on public and if you hear a gobble try to get to it as fast as possible but be aware it may be another hunter. In the end I learned the best way to hunt them is spot and stalk. The classic call em in only works with limited pressure and nobody around to sneak in on you and wreck your setup.
My experience was at spenceville and daugherty hill.