Like Fairchaser, all depends on the situation.
If I have a known bird roosted, I'm not saying a peep until right when I think he is about to flydown.. then it's hen talk.
If I'm going in blind to a spot to listen, have no idea if there are even any bird around, haven't heard anything and it's breaking day, I owl hoot before heading to a new spot just in case one responds close so I don't bump him in the early daylight while still on the roost.
I don't do it often, but I can make a mix between a peacock and crow with my mouth that will get one to shock gobble more reliably than any other locator call I've tried. It carries much farther than any other locator, so I will sometimes use that during the day on a known bird using
multiple properties to check where he is mid day... if he gobbles back 500y off the property, cant hear my hen calls, I leave him and head to another place and come back to him another day hoping he is either close enough to call across my line or is actually on my farm.
The places I hunt down here you just can't hear a bird gobble on the roost unless he is within 300y.... and often he has to be within 200y to hear on the ground. Just not many high spots well above the surrounding terrain, and too thick privet, yaupon, laurel and other trash below the pines for gobbles to carry a half mile.