This is an Instructional video about how to use a Flextone Glass or Slate Turkey Call. Although the Flextone call used in the video may not be your exact call, the technique used to produce the sound remains the same.
Very cool stuff. Going to try it for the first time, and taking the wife and kids with me, too. Heck, it would be fun to call 'em in even if you weren't hunting them.
Incorrect, you never want to use a cluck by itself. A single cluck sounds like a putt and will hang up gobblers. If you cluck, do it with some purrs or yelps.