Ensor says she had been taking inspiration from Stairmand in the build-up to the event to help with her performances.
"I was feeling good going into this weekend. I have been working with Billy all [last] week sponging up his knowledge of the break here as well as focusing on how to construct a good heat strategically," Ensor says.
"The last comp Ella beat me and I only needed a mid-range score to win that event so I was pissed off with myself but I have been working on getting back-up waves and I am stoked that I got a seven and six early in the final this weekend, which was a half decent heat total that I could defend instead of chasing down the win.
"These events are good practice for the World Qualifying Series events and especially this one because it always has the hardest field of surfers, getting to surf against the likes of Ella is awesome because she isn't always competing in New Zealand."
Vette placed second, which followed the same placing at the National Championships held in Taranaki in January. Williams finished third in the final ahead of Raglan's Jessica Santorik in fourth.
The Rip Curl GromSearch Finals were claimed by replacement surfer Jack Lee from Whakatāne and Raglan's Brie Bennett.
Open women's division final
1st: Raiha Ensor (Mount Maunganui), 13.9; 2nd: Saffi Vette (Gisborne), 13.47; 3rd: Ella Williams (Whangamata), 12.3; 4th: Jessica Santorik (Ragland), 11.03.
Open men's division final
1st: Billy Stairmand (Raglan), 16.44; 2nd: Luke Cederman (Raglan), 13.9; 3rd: Daniel Farr (Taranaki), 12.83; 4th: Luke Hughes (Raglan), 12.53.