All vibrations have power. There is not a specific number of vibrations you have to do in order for your runes to have power. People are trained from a young age to see the world in black-and-white where there is one correct answer and all other options are wrong. In reality, spiritual empowerment is extremely individual and there is not a "correct" way to do something.
In Satanism, you will need to learn to trust yourself. The information provided by the clergy is extensive and the groups are here for support, but you will need to do a lot of research and learning on your own. There are a lot of areas of spiritual knowledge that are not on the Joy of Satan and you will have to do the research on your own. Meditation is extremely individual and what one person experiences, another may not. For example, some people feel tingling, some people feel heat, some people feel pressure, and some people experience something else when they activate their chakras. Some people like runes while some people like Sanskrit. Trust your gut (intuition). Trusting your intuition can save your life.