Racing a K4 in Rio was seen as the perfect way to expose a handful of athletes to the Olympics at the same time and it nearly produced a surprise medal.
Olsen plans to continue that model, with the option of introducing the likes of North Shore's Rebecca Cole and Briar McLeely or Poverty Bay's Kim Thompson to the big boat.
Fisher said having a 10-strong squad to train with had injected new life into their programme, with everyone feeding off each other.
"We went straight into a gym block which, for a lot of the young girls, was the first they'd experienced at that level," Fisher said. "I remember my first gym block being horrific and I thought I was over-training but the neat thing is that we're there to lead the way and show them how to struggle. It keeps us honest as well."
Olympic champion Lisa Carrington was the only big name missing from the regatta at Blue Lakes, near Rotorua, which doubled as a national selection event.
In her absence, McLeely paired with Imrie to win the K2 200m , ahead of Ryan and Poverty Bay's Britney Ford, while Fisher stormed home in the K1 200m ahead of Ryan, with Ryan easing to victory in the K1 500m.
Top Frenchwomen Lea Jamelot and Manon Hostens - who were part of the French K4 in Rio - added further depth to the racing, with Hostens second and Jamelot third behind Ryan in the K1 500m.
Although Olsen won't make any firm decisions until the new year, Ryan is already relishing the change in their training.
"I'm such a creature of habit that I was a bit hesitant at the start but the young girls have so much personality and so much to give. We've got a lot to give them as well but we're all feeding off each other.
"It keeps you fresh and gives you something new to look forward to each day. We're raising the standard throughout and you can see it on the water.
"That's what the sport needs - it's what the Hungarians have and the Germans have. There's a certain standard that everyone needs to chase," she said.