After winning the Trans-Tasman series in 1996 as cox of the Queensland Junior eight Toon's first state representation at the National championships came in 1997 when he was selected to cox the Queensland youth eight to contest the Noel F Wilkinson Trophy at the Interstate Regatta within the Australian Rowing Championships.

[3] On a Queensland-record-equalling twelve consecutive occasions from 1998 to 2009 Toon was selected to cox the Queensland men's senior eight contesting the King's Cup at the Interstate Regatta.

[5] Toon made his Australian representative debut aged seventeen steering a coxed four at the 1996 World Rowing U23 Championships in Hazewinkel to fifth place.

[6] In 2000 Toon made his fourth appearance at the U23 World Championships in the stern of the Australian U23 eight who rowed to a silver medal in Copenhagen.

Earlier that representative season he steered both the eight at the World Rowing Cup III in Lucerne.