| Age | Thirds Coach | Thirds Captain | Ladder | Details | |
|---|---|---|---|---|---|
| 1961 | U/16 | Jack 'Cooka' Clark | Harvey Pearce | 1st > 1st | ? |
| 1962 | U/16 | Jack 'Cooka' Clark | ? | ? > 3rd | ? |
| 1978 | U/16 | Neville Bates | Peter Campigli | 1st > 1st | (19 + 0) |
| 1979 | U/16 | Neville Bates | Mark Cunningham | 1st > 1st | (16 + 1) |
| 1980 | U/16 | Neville Bates | John Campigli | 2nd > 3rd | (15 + 2) |
| 1981 | U/16 | Trevor McKinnis | Stuart McKinnis | 2nd > 3rd | (10 + 2) |
| 1982 | U/16 | Trevor McKinnis | Murray McKinnis | 2nd > 1st | (11 + 3) |
| 1983 | U/16 | Graeme White | Anthony Ryan | 4th > 2nd | (8 + 6) |
| *1984 | U/16 | Michael Spalding | Allister Williamson | * | *(0 + 1) |
| 1994 | U/17 | Darren Hovey | Jason Carroll | 2nd > 2nd | (12 + 3) |
| *1995 | U/17 | Darren Hovey | Brad Culph | *7th | *(3 + 9) |
| 1996 | U/17 ½ | Bill Waterston | Scott Graham | 1st > 1st | (15 + 1) |
| 1997 | U/17 ½ | Garry Studd | Adam Studd | 3rd > 3rd | (9 + 6) |
| 1998 | U/17 | Garry Studd | Damien Joyce | 1st > 1st | (15 + 1) |
| 1999 | U/17 | Garry Studd | Rhys Cavill | 4th > 4th | (9 + 6) |
| 2000 | U/17 | Garry Studd | Brett Edwards | 1st > 1st | (15 + 1) |
| 2001 | U/17 | Garry Studd | Jon Fulford | 3rd > 3rd | (11 + 5) |
| 2002 | U/17 | Garry Studd | Rhett Dadswell | 6th | (8 + 8) |
| 2003 | U/17 | Garry Studd | Joel Martin | 4th > 4th | (10 + 6) |
| 2004 | U/17 | Garry Studd | Alan Batchelor | 4th > 4th | (12 + 4) |
| 2005 | U/17 | Brent Searle / Max Perovich | Jarrod Searle | 2nd > 3rd | (14 + 2) |
| 2006 | U/17 | Bill Bell | Leigh Dadswell | 1st > 1st | (15 + 1) |
| 2007 | U/17 | Richard Harricks | Luke Toomey | 1st > 1st | (16 + 0) |
| 2008 | U/17 | Peter Carr / Greg Dadswell | Luke Broadbent / Jake Williamson | 3rd > 2nd | (12 + 4) |
| 2009 | U/17 | Peter Carr | Scott Dadswell | 1st > 1st | (16 + 0) |
| 2010 | U/17 | Andrew Louder | Tyson Carr / Lauchlan Dalgleish / Connor Spalding | 1st > 1st | (16 + 0) |
| 2011 | U/17 | Jake Miocic | Brady Miller / Jackson Giles | 2nd > 1st | (14 + 2) |
| 2012 | U/17 | Aiden Lee | James Laidlaw / Aaron Neil | 1st > 1st | (16 + 0) |
| 2013 | U/17 | Allister Williamson | Zander Laidlaw | 2nd > 3rd | (12 + 3 + 1) |
| 2014 | U/17 | Brad Haslett | Aidan Moar / Riley Taylor | 4th > 4th | (11 + 5) |
| 2015 | U/17 | Allister Williamson | Will Taylor / Tom Mills | 3rd > 1st | (12 + 4) |
| 2016 | U/17 | Allen Slocombe | Ben Boatman / Logan North | 2nd > 3rd | (14 + 2) |
| 2017 | U/17 | Matthew Summers | Sam Summers | 1st > 1st | (16 + 0) |
| 2018 | U/17 | Matthew Summers | Brody Griffin | 1st > 1st | (14 + 2) |
| 2019 | U/17 | Mick Driscoll / Andrew Bach | Luke Spalding | 1st > 2nd | (15 + 1) |
| 2020 Covid no football | |||||
| 2021 | U/17 | Tim Shea | Rhett Cosgriff / Chandler Culph | 3rd > Covid no finals, no premiers | (8 + 3) |
| 2022 | U/17 | Nick Oliver | Xavier McLoughlan | 3rd > 1st | (9 + 3) |
| 2023 | U/17 | Nick Oliver | Jim Jennings | 3rd > 3rd | (12 + 4) |