Crime by Jessica Marszalek, Thomas Chamberlin 1st Feb 2021 4:55 AM Premium Content  Juvenile delinquents on bail should be fitted with GPS trackers and immobilisers made mandatory in cars according to frustrated police, as top brass launched an extraordinary broadside at parents using cops as "babysitters". A day after Commissioner Katarina Carroll announced police would be taking their ideas for law reform to the Palaszczuk Government, Police Union president Ian Leavers said fitting youth on bail with GPS trackers could help stem the state's youth crime crisis overnight. "Strengthening youth bail laws and increasing prison sentences will work," Mr Leavers wrote in a powerful opinion piece in The Courier-Mail.