Central Hawke's Bay winger Kirsty Thomas, who has played club rugby in Auckland and North Harbour, and Cook Islands Sevens rep Taria Arere were among Blake's new backs to impress. Former world champion Black Fern Amy Williams was outstanding at second five-eighth and experienced halfback Gemma Woods relished the difficult conditions.
The loose forward trio of No8 Te Aroha Hunt and flankers Naomi Hunt and Laurae Blake functioned well.
Props Sharlene Maui and newcomer Harmony Lone, alongside hooker Forne Burkin, provided plenty of grunt in the engine room.
Te Matau A Maui adopted a relaxed attitude to both games and ran in six tries against Manawatu.
Four hours later they conceded an early try against Wairarapa but produced a near-perfect second half.
The Christie Bartlett-coached Te Matau A Maui Colts won their grade and the Huri Maniapoto Taonga.
On Saturday they beat Horowhenua-Kapiti by default and on Sunday Poverty Bay East Coast representatives Turanganui A Kiwa 15-10.
"I was rapt with how our boys shook off the disappointment of not having a game on Saturday as the Horowhenua-Kapiti boys had too many injuries from their first game," Bartlett said.
"There weren't any conversions or penalties as the mud was too thick to kick out of. Our halfback Caleb Harmer scored the winning try after Turanganui tied the score at 10-all."
Prop Gordy Falcon captained the Te Matau A Maui team in admirable fashion.
Hooker Jack Smith-Ballingall was another to shine in the frontrow.
Bartlett's first five-eighth Heperi Harrison and centre Matt Bird performed well. Like Blake, Bartlett intends to defend the title in Gisborne next year.
A lack of players forced Te Matau A Maui's senior men's team to withdraw from the weekend's tournament.
The Hawke's Bay Tuis open their NCP campaign against Auckland at Park Island on Saturday, August 22.