Waybacks Football Club (SA)

General :
I keep seeing this club referred to on some occasions as Waybacks (singular), and then on other occasions as Waybacks (plural).

Guernseys & Nicknames :
1954 - Waybacks were known as the Demons.
1957 - Waybacks were known as the Demons.
1964 - Waybacks were known as the Demons.
1969 - Waybacks were known as the Demons.
1972 - Waybacks were known as the Demons.

Grounds :
1946 - Waybacks were based at Centenary Oval.

Timeline :
1903 - Waybacks FC was formed.
1910 - Port Lincoln FA : Waybacks were premiers.
1915 - Port Lincoln FA : Waybacks participated.
1932 - Port Lincoln FA : Waybacks participated.

1946 (Port Lincoln FL) :
Waybacks FC were formed.
Waybacks were a founding club of the Port Lincoln FL.

1948 - Port Lincoln FL : Waybacks were premiers.
1951 - Port Lincoln FL : Waybacks were premiers.
1953 - Port Lincoln FL : Waybacks were premiers.
1954 - Port Lincoln FL Grand Final : Lincoln South defeated Waybacks.
1957 - Port Lincoln FL Grand Final : Lincoln South defeated Waybacks.
1958 - Port Lincoln FL : Waybacks were premiers.
1959 - Port Lincoln FL : Waybacks were premiers.
1960 - Port Lincoln FL : Waybacks were premiers.
1963 - Port Lincoln FL : Waybacks were premiers.
1964 - Port Lincoln FL Grand Final : Lincoln South defeated Waybacks.
1966 - Port Lincoln FL : Waybacks were premiers.
1969 - Port Lincoln FL Grand Final : Lincoln South defeated Waybacks.
1971 - Port Lincoln FL : Waybacks were premiers.
1972 - Port Lincoln FL Grand Final : Lincoln South defeated Waybacks.
1973 - Port Lincoln FL : Waybacks were premiers.
1974 - Port Lincoln FL : Waybacks were premiers.
1975 - Port Lincoln FL : Waybacks were premiers.
1976 - Port Lincoln FL : Waybacks were premiers.
1979 - Port Lincoln FL : Waybacks were premiers.
1980 - Port Lincoln FL : Waybacks were premiers.
1991-83ish - Port Lincoln FL : Waybacks participated.
1984 - Port Lincoln FL : Waybacks were premiers.
1985 - Port Lincoln FL Grand Final : Mallee Park 24.21.165 defeated Waybacks 22.9.141.
1986-95 - Port Lincoln FL : Waybacks participated.
1996 - Port Lincoln FL Grand Final : Mallee Park 17.13.115 defeated Waybacks 13.14.92.
1997-98 - Port Lincoln FL : Waybacks participated.
1999 - Port Lincoln FL Grand Final : Mallee Park 18.15.123 defeated Waybacks 12.7.79.
2000-02 - Port Lincoln FL : Waybacks participated.
2003 - Port Lincoln FL Grand Final : Waybacks 13.10.88 defeated Lincoln South 12.9.81.
2004 - Port Lincoln FL Grand Final : Marble Range 10.11.71 defeated Waybacks 10.6.66.