1970
We currently have no details on this event
1971
Victorian Water Ski Association – Southern 50
- 2nd May 1971,
- Outright winner: Avenger,
- Crew: Bob Jackson, Wayne Mitchell
- Skiers: Robert & Graham Dance
- Time: 56:64
1972
Victorian Water Ski Association – Southern 50
- Outright winner: Thunderbolt
- Driver: Wally Hackett, Observer: Bruce Sharp
- Skiers: Peter Ward, Bruce Robberds
- Time: 49.:38
1973
Sponsored by OMC
- Outright winner: Siesta Marine
- Driver: Tom Wyld, Observer: Jim Reid
- Skiers: Rick Williams, Noel Middling
- Time: 45:00
1974
Sunday April 28th 1974
- Anchor Wetsuits – Southern 50
- Outright winner: Splinter
- Driver: ? Observer: ?
- Skiers: Wayne Jones, Neil Harris
- Time: 43:44
1975
Sunday 23rd February 1975
- Anchor Wetsuits Southern 80k,
- Outright winner: Suicide III
- Driver: Len Retallick, Observer: Anthony Cornelissen
- Skiers: Harris Peters, Robert Hamilton
- Time:
1976
Southern 80 Ski Trial
- Outright winner: Harada
- Driver: Jack Skipper, Observer: Kevi Hayes
- Skiers: Leigh Knopp, BarryCarne
- Time:41:25
1977
Southern 80 Ski Race
- Outright winner: Suicide
- Driver: Len Retallick, Observer: Mick Webb
- Skiers: Peter Webb, Roy Turner
- Time: 42:05
1978
Southern 80km “Ski Trial”
Sunday February 19th 1978
- Outright winner: Suicide
- Driver: Len Retallick, Observer: Brian Atta
- Skiers: Stephen Bowers, Geoff (Roy) Turner
- Time: 43:30
1979
Southern 80 Ski Trial
Sunday February 18th 1979
- Outright winner: The Tack
- Driver: Reg Cowie, Observer: Tony Beehag
- Skiers: Craig Beehag, Ricky Christian
- Time: 41:45.46