After four straight wins, Australia are heavy favourites to claim a clean-sweep of the Trans-Tasman Tri-Tournament, and claim an unexpected world no.1 T20 ranking, admittedly by default.

Standing in their way is New Zealand - with a single win against the Poms - and an unconventional Eden Park pitch, with short boundaries that heavily favour the batsman. Warner says his tactics may have to suit the pitch. 

"You might have, for the spinners, everyone on the straight boundary and no one there (square of the wicket) and make them try to hit a reverse sweep and maybe get a wicket," Warner told cricket.com.au. 

"You've just got to think on your feet when you're out there."

Australia conceded their heaviest run total at Eden Park earlier in the tournament, before sensationally chasing it down with seven balls to spare. 

"It's a challenging one but at the end of the day I don't think it (was about) how poorly the bowlers bowled at all. The bowlers bowled well," Warner said.

"You probably have to have obscure fields. You might have to have like a deep fly slip on the boundary instead of a third man.

        "They're bizarre little catching spots where you might get a catch.

"In Australia you set fields for certain players ... (to) where they're going to hit. Here those fields, generally they can hit it for six.

"Where's a mistimed pull shot going to go? Over the top for six? You might have one just behind the keeper."