Our experience was that locators would work first thing, but since they've got most of their hens by this point in the year they just weren't interested in hen calls after they came off roost. Here's what has worked for me:
1) Mornings - locate before sunrise with peacock or goose call. Sneak as quiet as possible as close as possible and right as sun starts to crest, do a few small putts. Don't yelp, it'll overcall that close. Be absolutely still because they will see everything.
2) After the flydown, they will not talk. They are currently busy gettin' busy and aren't interested in 1. Why leave 10 for 1? Find a "turkeyish" area and plan to sit for a long while. You can putt and yelp but for the most part you don't want to over call. You just want to sound like a feeding turkey hanging out. This is actually how we killed our 4 this year. Just hanging out during the day and not going in for naps (we really did want those naps though).
3) Evenings - if you can find a launch location for their roost, get there a few hours early and set up. Your goal here is to ambush them when they come in to launch for the roost. After you do this, you've officially ruined that launch site for awhile so make sure you make good shots or you just busted a hunt area for nothing.
I'm sure others have difference experiences, but this is what has worked for me. It was pretty cool after I was done hunting to see a flock on private land and start calling. While the tom was out in the woods, he would gobble back at me. The minute he got in with the hens, I couldn't get his attention to save my life. I've heard that you can call the hens in at this point and the tom will follow - going to read up about that before 2018 season!
Curtis