Use Johnsons athletic tape ,the cloth porous kind. the cheap stuff and or plastic tape DOES NOT WORK.
Once you set the strips you can anchor at the body and at the end of the workout take off the anchor and reuse the "grip" another day or two. Or just retape but the setup is durable. There is an art to getting the tape right over the hot spot(s) and not rolling or bunching and practice makes perfect.
If you are going to the June Cert PLEASE PRACTICE these techniques. I swear I taped 30 hands each day at the April Cert each day. Team Leaders and assistants should definitely learn this technique as well so they can use with their team.
The cert is tough on hands, no real way around it and having this technique avaible really makes a huge difference because you can still swing,snatch and clean even if you have a tear with this setup.