At 1:14', the mum's right hand's position (up and down) between shots.
Early in the film when Martin and his mother browse at the Surfboard shop a passenger train is visible passing in the background. There are no passenger trains in Tasmania unlike in Geelong, VIC where the movie was shot.
Centrelink, Australia's social security agency referred to in the film, was established in 1997, a year after the shooting.