I've seen some big ones in Lake Pupuke, a local resident told me they hang around under the willow trees at the north eastern end 

Not sure the locals would be happy somebody fishing for them... (as I believe you required to kill carp once caught) and I'm no murderer.

Tried Lake Pupuke a long time ago, (Hospital end) are you still aloud to fish it?

I know that lost a fishing line in a lake causes quite bad damage to the ducks and wild life (if you lose any that is)

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He's just too much into his carping, and since we have monster carp here, that's whet hes after.

Yeah mate you're still allowed to fish Poo lake. 

I must say though, last time I was in there we had little luck finding many. Lots of tench but not too many Koi Carp. Night time was best with bread. I was also surprised at the underwater structure in that lake. It's a massive drop off in many places with big freshwater vegetation. Very tall. There were a few holes in the vegetation where if you stood in it it would somewhat tower over you. I'm 190cm and it was well over my head. The fish seem to wedge and hide in those weeds. Goodluck

Two others were big enough to break my 8lb line. In a stormwater settling pond.