"It's been great for us, it's early on in our preparations for the year and it pointed out all our rusty spots so we've managed to take the kinks out throughout the week and it's really nice to come away with a win."
Powrie expects that the rivalry between them and Snow-Hansen and Willcox will resume soon.
"We have the national champs in a couple of weeks up in Kerikeri so it'll be all on for that no doubt."
Looking hard to beat going into the final day in the 49er, world champions Peter Burling and Blair Tuke wrapped up the regatta with a clean string of wins yesterday.
"It was pretty interesting racing, pretty shifty, but we managed to come out on the right side of it a fair few times so we've been happy with the week and the boat was going well."
Marcus Hansen and Josh Porebski, silver medallists at the 2013 World Championships, were second and Benjamin Goodwin and Sam Bullock from the Napier Sailing Club snuck through for the bronze.
World champions Alexandra Maloney and Molly Meech fended off the international competition to take the 49erFX class from Annemiek Bekkering of the Netherlands.
Maloney and Meech clocked up eight race wins across the 14-race series and finished six points clear of Bekkering.
Australia's Haylee Outteridge and Ella Clark came in third.
Rutger Van Schaardenburg, from the Netherlands, won the Laser class after sailing consistently. NZL Sailing Team's Andy Maloney was comfortably second and Colin Cheng from Singapore took the bronze.
In the Laser Radial, Ryan Lo Jun Han won despite not having his best day on the water with a fifth and a third.
Just one point back was Sara Winther, Olympic campaigner in the female single-hander, while youth male sailor Trent Rippey from Tauranga took third overall.
There was a compelling finish in the Finn class with two-time Olympian in the Laser Andrew Murdoch going into the final day three points adrift of younger training partner Josh Junior (Worser Bay Boating Club).
But after a win in yesterday's first race where Junior finished third, it all came down to the final race, which went the way of Murdoch who won overall by just one point.
Jon-Paul Tobin and Natalia Kosinska won the RS:X windsurfing, Tobin with a clean sweep of wins across the regatta in the men's RS:X 9.5 division.
His closest rival was Korean international Su Whan Lee. Tony Mackenzie rounded out the podium placings in third.
It was a different story for Kosinska, however, who had a tough battle with Murrays Bay Sailing Club's Patrick Haybittle for overall victory in the RS:X 8.5 division.
Kosinska, a New Zealand Sailing Team Olympic campaigner, was lying second to Haybittle over the first half of the series, but edged in front with a string of wins on the penultimate day setting the scene for a grand finale on day four.
Yesterday, in light wind pumping conditions, Haybittle won both races. However, Kosinska placed third in both to hang on for a narrow one-point overall victory.
Torrin Bright, the inaugural National Champion in kite-board racing, was dominant with 14 wins from 14 races. Brad Walker and Ben Turner consistently finished behind Bright to take second and third respectively.
Tim Dempsey and new SKUD18 partner Gemma Fletcher won the Paralympic double-hander.
Brendan Tourelle and Anna Ankersmit finished second with Netherlands sailors Akko Van Der Veen and Liza Elburg third.
