I agree that it is easy for people to do something incredibly dangerous--like doing the extraction in the microwave. Personally I wouldn't even give microwave instructions lest they be confused with the "don't do pot it is bad for you" type of disclaimer. You should simply say "DON'T USE THE MICROWAVE!!!"

The reason people get hurt (and die) is they try to boil the alcohol directly over an open flame--very stupid and very dangerous. The water bath is quite safe (3000F for open flame vs. 212F for water bath). Again make it clear that under no conditions should anyone put a pot of alcohol over an open flame or directly on an electric burner. It MUST be in a water bath. If they put it in a water bath then it should be quite safe.

Master Wu