I have kids, and am President of a youth Football organization with tons of parents and kids (9 more months and counting down). Parents absolutely think their kids do NOTHING wrong. I am not sure what the hell has happened in just a short period of time. I am 48, and most of my kids friends parents are a little younger. I see it every where. They let them do what ever the hell they want too!! My patience is about as short as it gets now. Just last football season I got spit in the face after a fan jumped a fence, shoved a ref, and I tried to keep me from escorting him out of the stadium. It is nuts.
Track owners can stop it if they wish. Take and hand out rules at sign up. No warnings, nothing. You violate them, I see you, your wrist band is cut off, and your packing up and going home for the day. Do this two or three weekends, and word gets out that you mean business, and then parents may watch what the hell their kids are doing.