With only 30 acres I would listen close to were I park at daylight before I walk in. You will hear a turkey if it's on or near your place! If you hear them you'll have to go from there. If not, like compton said, go were he see's them and sit still and call about every 20 or 30 min. If there regulars there, they'll show up. I don't use decoys a lot, but do like them in big fields or cutovers were birds usually hang up out of range.