Cooper said Surrey Park's visit to New Zealand had proved so successful that her club was returning the favour, adding that the hospitality Northland showed was also being returned.
"They're [Surrey Park] really our sister club now. We're travelling there for the week and [later this year] Mark is selecting a team and they'll repeat the experience they had [this year] next summer.
"I'm looking for this to be an annual trip, it's something that if they continue with swimming they get an opportunity to see what's there and gives them a chance to see there are other people who get up in the morning and swimmers are swimmers and they do the same thing [get up early].
"It was obvious when Mark came over they trained hard and competed against each other and made good friends."
Cooper's swimmers will have some rest upon their return to Whangarei next Tuesday as they continue preparations towards New Zealand Short Course Championships in Wellington later next month.
She said her goal was for the squad to learn to deal with the ups and downs of travelling as a team, from dealing with in-team sickness to learning how to perform when you may not be feeling the best, before heading to Wellington.
"They're looking forward to it I think, it'll be excellent for them to learn to swim and travel internationally.
"My goal is they come back and race hard back in Wellington. Settling them down between now and Friday [when racing starts] will be a task though; it'll be a good coping skill for them."
Northwave squad: David van der Star, Poai Niha, Melita Raravula, Logan Howe, Cheyenne Field, Callum Prime, Ellie Eastwood, Joshua Young, Hayley McIntosh.