To hunt turkeys with a bow I would suggest a good ground blind like a Double Bull, use a good mechanical broadhead with a really BIG cutting diamter, and to hold your shots till they get within 20 yards or less. You either want to shoot them in the head (harder shot), right in the top of the thighs, dead center through the wings, or you can shoot them in full strut right up the center when they turn their back to you. Decoys can prove to be usefull as well. You really want a big cutting diamter broadhead that will rock them hard. You can also team up a good regular broadhead with a Muzzy grasshopper or even a large washer between the broadhead & shaft - you can even do this with a mechanical if you choose. The main point is to provide as much cut & shock as you can in a way that puts the bird down fast and/or prevents it from getting away before it dies.