PREMIERSHIPS
K GRADE (TROPHY SPECIALIST TROPHY)
| 1980 | Osborne Park | 1988 | Bayswater |
| 1981 | Maylands | 1989 | Rockingham |
| 1982 | Mt Hawthorn West Perth | 1990 | Collegians Old Scotch |
| 1983 | Dianella | 1991 | Ocean Ridge |
| 1984 | W.A.I.T | 1992 | Wembley |
| 1985 | North Fremantle | 1993 | Innaloo |
| 1986 | Innaloo | 1994 | Cockburn Lakes |
| 1987 | Mt Hawthorn West Perth |