Totally agree about not stumbling onto the channel. But one thing to consider is that once coaches are pointed to your channel for the specific video you shared, they won't be able to see other videos if they are unlisted. It's perhaps a non issue if your skills video gets their attention.We make them unlisted. One, because she is a minor and the videos have her cell phone and email on them. Two, so high schools can't use them for scouting purposes (I'm in the "scouting department" for our HS team and we absolutely do this). Our assumption is that a coach isn't going to randomly stumble on to her videos and become interested.