When will people learn that "bath salt" is not a drug, but rather a cover for any number of new synthetic substances.
Since i don't know what you are actually smoking, i can't really give you accurate advice but i do know that with meth you melt it first by applying heat to the pipe, keeping the flame a good distance away like 3 or 4 inches, and then apply slightly more heat to the puddle, by moving the flame a bit closer, so it begins to produce smoke while circling the lighter underneath (this is when you begin toking), making sure to not burn and waste it.