He is best known for his work with at-risk youths, especially in his use of boxing for those suffering from substance abuse problems and anger management issues. He is also a 6th degree black belt and a professional Boxer. His progression into Martial Arts and Boxing happened while he was attempting to raise funds for the community in Dulwich Hill, where he was the Parish priest.
Father Dave is also a published author and has taken a very public stance on various human-rights issues, most especially the Palestinian occupation and the current war in Syria where he opposes all forms of Western military intervention.
Father Dave has been twice awarded Marrickville Citizen of the Year, and was nominated for Australian of the Year in 2004 and 2009. In 2012, he broke the world record for the most continuous rounds boxing.