I would like to add a component for hunting gobbler flocks.
Depending on how long your Fall season extends into the dimming daylight, the gobblers will group with the jakes. Oftentimes, gobblers and jakes will be in two different flocks, depending upon population, environment, etcetera.
If you have a large mixed flock of gobblers, which you will find in the Northeast by late October onward, oftentimes a good set of fighting purrs and gobbler clucks will rise interest in the gobblers if they are in earshot.
I've personally noticed, that unless they are filling up on the remaining grasshoppers and the dropping acorns, gobblers seem to like nothing more than beating up on aggessive jakes
Edit: I've had great luck pulling out the wingbone call in the Fall, especially one made from gobbler's wings which has a deeper more inflective tone...