$80/hr?  You should find a new gym.  I've considered getting my PT cert before, it's not exactly that hard.  It's mostly just common sense and able to memorize some basic facts.  Personal training is 80% example setting and 20% knowledge spreading imo.  Any built person on the gym can show you how to bet built like them, because it works.  The 20% knowledge part is mostly common sense and knowing the difference between pain, injury, and the basic groupings of the muscles and body parts.