Here I am sitting on (well, mostly on) the wobbly disc.
To learn "hind-end awareness," I turn 360 degrees in both directions on the balance disc. It was -5 and the reason the balance disc is blurry is that I breathed on the camera and my breath created an icy film on the lense (as opposed to a smudge). The camera hound's fingers were sooo cold that she had trouble dispensing treats properly and her "clickering" was a bit off (not sure if she was clicking my foot movements or her own!).