I've never had a problem getting a gobbler yelp from any of my pot calls when running it toward the center of the call. Slow your cadence and the pot surface should produce suitable gobbler yelps and clucks.
A mentor showed me the value of gobbler yelps and clucks to entice a bird hung up out of range. Some years given the timing of the season gobbler yelps may be the only call a group of longbeards will respond to.
