Always make sure that you have them cast and return to the bar several times so that they get used to working the bar.
Competitive gymnastics has a mystique to it that I've never understood. Probably because I've been in the thick of gymnastics since I was a toddler it's impossible for me to understand why there is such a fascination with the ability to tumble on a 4-inch piece of metal covered in leather that sits 4 feet in the air. To me, that's normal. But for most people, that probably seems like a somewhat of a circus feat.