Reiker and I attended a Sniffinar with instructor Dana Gallagher a couple months ago. She's coming back in July!
Anyway, she graciously allowed us to video the seminar, and said I was free to share the video of Reiker working through the stages as long as I stripped the sound. So excuse the music, or turn off your volume!
We had four turns. The first turn was just an intro, the second was similar but Dana handled our dogs while we set boxes. The third we took off our leashes. My dog was the only one who left the 'search area'. And the fourth was puzzles and blind hides. Fantastic seminar. We have been practicing nosework once a week after my class, and both boys love it.