bballman- Sorry I struck a nerve. If I did, maybe it's for a reason. I said the little Jugs gun. There's more than one kind. And yes, it looks like a blow dryer. And yes, it is the gun of choice for over-zealous parents! Here's something else for you- You are right that he's not little Johnny if he has a gaggle of scouts gunning him. All the more reason for his parent to have his (or her- once had a mom back there) butt in the stands to let those people do their jobs.
BOF makes a great point. Use the gun as a teaching tool in practice as well as for teaching variance of speed in different pitches. The only thing I would correct is that the Jugs typically will read a little faster than the Stalker.