there are plenty of bike shops in wellington that would be happy to fit a new bike, but where's the BEST place to get a tri bike fitted?

I know what you mean!

I reluctantly went to get a TT bike fit last season before Road club nationals (i was talked into it.. not convinced i would get much benefit) from Silas Cullen last season.

I came away a convert.. he is very good. What he changed, increased my power and comfort on TT Bike, as well as a recommendation for my road bike fit which has resulted in better V02 power.

I highly recommend him.

his detail are here;
http://www.pnp.org.nz/club/Coaching/

+1

Being a Tri coach, I'm sure he'll set it up with the understanding you need running legs too.