Hanley said the case examined by the commission on Monday, in which a man who coached an under-10 girls' team allegedly sexually molested a number of them, was an example of someone who was coaching a team that included a relative.
Under current rules he would be exempt from working-with-children scrutiny.
The commission heard how an 8-year-old girl was allegedly raped by her soccer coach, sometimes while the man's wife was in the same room.
The girl was later diagnosed with HIV, which she claims she contracted from the coach of the team in southern Sydney.
The alleged victim, now 27, was too distressed to give evidence in person but her statement said her mother, who had a drinking and drug problem at the time, allowed her to stay at the coach's home after soccer, training, on weekends and during school holidays.
She said she did not tell her mother because she thought she would be blamed for causing trouble.
In March 2003, shortly before her 15th birthday, she was diagnosed with HIV.
Doctors told her that she probably had it for "quite a few years", she said.
But she had never had a boyfriend or a blood transfusion since the alleged rapes.
"I believe I got HIV from the coach," she said.
- news.com.au