I try and start with a loud series of yelps, roughly 143 notes on a box call then switch back and forth between 43 owl hoot blasts and 37 crow calls. Then I break out the gobble call and fly down kackles no matter what time it is.
If all that excellence doesn't work I get a bull horn out and play the siren to get a shock gobble.
No I start soft and try and keep things natrual sounding but I'm not afraid to crank it up, I called in a hen today on public land and she made a 10min straight racket with everything and the kitchen sink plus a few weird things i didnt know came from a turkey. Did she over call? make the gobblers call shy because she called too loud and too long? I doubt it, unfortunately she didnt have any longbeards in tow but im never be afraid to call like a Peeved off hen if thats what it takes.
I've always lived by, call as little as possible to get the gobbler to commit but sometimes you have to really tounge lash him to get him to listen.