Guys, thank you very much for your help and some good advices.
Andrew, I read some of your posts, and actually I got the idea for speed jelqing from you!
SmilingBob, I have downloaded the videos for some exercises, jelq included, but something doesn’t feel right to me in the jelq video. The guy’s penis there is practically 100% erect! Anyway, I’m pretty sure that my technique is fine.
My primary question was about the PIs. So, you’re saying that they aren’t necessary. Good. That’s what I wanted to know.