ive heard that guys can kee kee on a slate id like to see that.
For me the kee kee on a pot call works best with a pot with a rim. Put the striker against the rim and push it forward a little. The pots seem to have a higher pitch right out near the edge. You want to be careful with the pressure on the striker or it will turn into a putt. I push about a 1/4 of an inch, stop and repeat 2 or 3 times. Run it into a yelp on the last stroke and back to home.