I coach my own child. She's 11 and will be level 8 next competitive season. I coached her on all 4 events as a preteam athlete and that had its challenges. Now, for team, I coach her on one event and that works a lot better. She excels on the event I coach, so, I'd say we make a good team. Sometimes, if she's really tired, she'll let her guard down, more than she would with another coach, and I won't be able to get as much out of her. But, on the flip side, I also know her better than anyone, and know when to push and when to back off. I'm coach at the gym and mom at home. Sometimes the lines get blurred a little, but not often. The arrangement has worked well for us. As a gymnastics coach, if you have a kid in the sport, there may not be another viable option other than to coach him/her. I know of at least a few parents in our area who coach their children and it seems to be working well for them. It's all in how you approach it, but, I do believe it helps that I've coached her almost since the beginning.