I haven't been using the Aneros for more than a week due to work stuff, but now I'm trying for more. I began training again yesterday, holding a partial PC contraction, then slowly contracting my anus. Involuntary contractions come and go this way.
Today, I got down on all fours in front of the mirror to see what was going on back there. As the Wiki explained, the P-tab has problems staying in place and it would rotate off my perineum. However, I was able to generate some visible involuntary spasms in front of the mirror, which looked great.
XTube seems to have a lot of Aneros users, though most of them are jerking-off with it. That isn't what I want to do. In fact, a lot of XTube submissions are using the Aneros for Kegels, which I believe just makes you sore down there. But XTube does give me some idea about what's happening in other men.
Source: https://www.aneros.com/blogs/pumping/