Nancy has some great points. Her most important point is # 2. I now teach only MELT but used to teach water aerobics. There were a few instructors who ABSOLUTELY DID NOT WANT ME IN THEIR CLASSES, and the uppercase is not an accident. And just recently, when I showed up for a stretch class, the instructor assured me that she really did not have a problem with me in her class but I sensed that she would have preferred my absence.