Some of Wally's achievements include:-
- Period of Zone/District Service 1992-2009
- Zone Patron from 1998 - 2009
- Zone President from 1992 – 1994
- Zone Vice President from 2001 – 2003
- Zone State Councillor from 1996 – 1997
- Awarded Australian Sports Medal (ASM) 2000 for services to lawn bowls.
Championships won at Umina
1974 – Fours S. HARTLEY, G. JENNINGS, S. BLACK, W. RAINBOW
1992 – Triples G. DAVIS, W. RAINBOW, J. BOATWRIGHT
1994 – Mixed Pairs M. OUVER, W. RAINBOW
1995 – Major Pairs M. FRASER, W. RAINBOW
2011 – Triples S. STEAD, W. RAINBOW, R. ANDERSON
Served on the Committee from 1968
Won Umina’s 1st ever pennant flag in 1969 against Toukley
The pennant side was
Alex Taylor, George Jennings, Jim McCabe, Wally Rainbow, Ralph McGibbon, Roy Hill, George Matthews, Ray Smorti, Ossie Pickering, Hec Plasto, John Langford, Dal Morris, George Retford and Jack Hinwood. With manager, Tom West.