personally I think if you kill a fall turkey, it will be pure luck because you need to learn a bunch about the lifecycle of turkeys in the fall but here goes.
find sign, if its hens/young sign give the lost call on a box call (my preference in the fall) if you get an answer your in the game, (hint, look for wild grapes, turkeys love them, they'll hit cut corn fields on rainy days) call like a dominant hen if you get a response, gobblers in the fall will drive you insane!
RR