"Having the international crews has been a massive gain for us because we don't usually get many internationals coming to New Zealand," Saunders said. "We have four crews in the top 10 as well as a four-time world champion.
"There are plenty of gains being made and we are really enjoying the challenge they are bringing as well."
Four of the five crews will compete in next month's Oceanbridge NZL Sailing Regatta at Murrays Bay, the final stop in the Tasman Series. It's this country's premier Olympic and youth class regatta and the Nacra 17 is bound to be one of the most competitive fleets despite the small number of entries.
Mackay and Wilkinson have benefited immensely from the change from non-foiling to foiling catamarans that will be used at the next Olympics, meaning all crews essentially started from scratch when the boats were released last year.
"We sat down before we got our boats and decided that the way New Zealand was going to win a gold was if we all worked together, and there was no doubt in our minds that that is what is going to happen. We are all trying to win that gold for New Zealand," Mackay said.
"It's working really well. We are really open with each other and build on each other's skill-sets. It's really exciting."
• Michael Brown is Yachting NZ communications manager.