"They are really receptive to learning new things. We learn what they do and work with them to get the best result," Mr Schrafft said.
Mrs Schrafft is an Intensive Care Paramedic and works out of Kerikeri and Paihia. She said it was a great experience to be involved in such a major sporting event.
"They are really keen to learn off us and see how we treat patients."
During the iron races on Monday the couple alternated between being on a boat, following the flotilla of waka, and manning a first aid station at the race center at Avarua Wharf.
During racing one paddler had to be taken from his waka onto the medical boat and treated for heat stroke back on shore. Another paddler had to be treated for multiple blows to the head after her canoe flipped.
Other injuries including removing kina spikes from feet and abrasions.
Oropai Mataroa, of the Cook Islands Red Cross, said it was great to have such experienced medical staff onboard for the week-long paddling event.
She had been involved in Vaka Eiva for five years . While she had first aid training it was great having the Schraffts with their extensive medical knowledge.
Mrs Schrafft is a keen kayaker but neither of them has tried waka ama. They were both impressed with the crews during a great day of racing.
They will follow the crews in the round Raro races on Thursday and Friday.