Well Iv'e only been turkey hunting for 3 years, so I'm not a pro, but the best way is to try to imitate the hen, and gether worked up. Usually she will come lookin for a fight and of course the Tom is going to follow. Say if she yelps 6 times, you yelp 6 times. I think its better to be a little on the aggresive side. Just be extremely careful with your movement, which Im sure after 20 yrs of turkey hunting you should know that hens are very nosy and will sometimes get right in your face, literally lol.