The given co-ordinates will take you to a flagpole outside the NaeNae Boxing Academy. From there it will be very obvious how to obtain the required information to lead you to the actual cache.
Allthough boxing is a central theme of the academy, and a personal passion of the academy owner, the main focus of the academy is on fitness and learning life skills. Targetting local youth in the area the success of the free programme is attracting national interest and has been the subject of a reserach paper by Massey University. In recognition of his efforts, Billy Graham, the owner, was the winner of the 2011 Local Heroes section of the New Zealander of the Year Awards.
The cache can be found at S 41° 12.ABC E 174° 57.DEF where;
A = Jack Dempsey - 3rd digit
B = Sir Robert Jones - 5th digit (this is "6" as people seem to have trouble finding it - will update when passing again with a more readable plaque)
C = Rocky Marciano - 5th digit
D = Ezzard Charles - 1st digit
E = Joe Louis - 4th digit
F = Max Baer - 6th digit
Checksum: A+B+C+D+E+F = 26
DAYTIME ONLY PLEASE! There is no need to enter private property, all the required information can be collected without leaving the footpath. However, out of respect for the privacy of the property owner (who is aware of the cache) no night time visits please - and also, there is a police station directly across the road :-)