| Year | Rainbow | Brown | ||
| 1967 | 7.2 | 6.2 | ||
| 1968 | 7.2 | 8.8 | ||
| 1969 | 5 | 6.3 | ||
| 1970 | 6.4 | 7.1 | ||
| 1971 | 6.1 | 7 | ||
| 1972 | 5.7 | W. Starmer | 6.3 | |
| 1973 | 6.2 | 7.3 | ||
| 1974 | 7.3 | 7 | ||
| 1975 | 9 | 11.3 | ||
| 1976 | 6lb-13ozs | 12lbs-5ozs | ||
| 1977 | 5lb-9ozs | Bill Ellis | 9lbs-7ozs | |
| 1978 | ||||
| 1979 | 5.6 | 8.1 | ||
| 1980 | 8.1 | 6.6 | ||
| 1981 | ||||
| 1982 | 4.8 | 7.4 | ||
| 1983 | 5.5 | 8.3 | ||
| 1984 | ||||
| 1985 | 7.5 [7lbs 8ozs] | 8.9 | ||
| 1986 | 6.6 | 12.4 | ||
| 1987 | ||||
| 1988 | ||||
| 1989 | 10lb 10oz | Mark Brinkman | ||
| 1990 | 7.6 | 4.8 | ||
| 1991 | 11.3 | 9.2 | ||
| 1992 | 13lbs 13ozs | Dave Barker | 11.5 | |
| 1993 | 10.1 | 14.8 | ||
| 1994 | 11.8 | 17lbs 02z | Stephen Jacques | |
| 1995 | 11.9 | 12.3 | ||
| 1996 | 7.1 | 19lbs 12ozs | Graham Nichol bait caught | |
| 1997 | 13 | 12.9 | ||
| 1998 | 11.8 | 12.5 | ||
| 1999 | 9.8 | 6.2 | ||
| 2000 | 8.9 | 13.5 | ||
| 2001 | 10.1 | 4.7 | ||
| 2002 | 8.4 | 5 | ||
| 2003 | 9.5 | 7.8 | ||
| 2004 | 6.8 | 9.5 | ||
| 2005 | 9.9 | 10.4 | ||
| 2006 | 10.8 | |||
| 2007 | ||||
| 2008 | ||||
| 2009 | ||||
| 2010 | ||||