This is a very tough class to get going and teach. Our main problem was always consistency. Adults have things that come up and many of them end up missing classes.
Don't start the class right after new year's. You will get a whole bunch of people signing up for one month and then dropping. Start your program now so it is established when resolution time comes around.
"I used to be a gymnast...let's do aerials." This is what happens, then your entire class pulls every muscle in their body. Get rid of this problem by starting every class with a 30 minute cardio style warm up. This will get your gymnasts back into shape and keep them in class longer. Cardio style means aerobics, not what your level 6's do.
Market your class as a "Great way to stay in shape (or get into shape)"...not a "Great way to relive the glory days". Start slow and progress over time. You'll have gymnasts that will drop out because they are too sore after trying a handstand.
Last of all, give them what they want. Don't make them do things they don't want to...or you are not capable of spotting safely. Adults get hurt very easily.
