MANY uncertified people died a terrible death when their friend, father, cousin, brother who weren't dive instructors took them diving when they shouldn't have done so. Aside from the legal issues, the most terrible thing after the death or somebody turning in to a vegetate state is the guilty feeling people have after they have lead to the death of the uncertified unknowing relative/friend. I know many of these people that live with the guilty feeling for the rest of their lives. Do NOT do it!!