Stephenson's athleticism, communication skills and smart reading of play particularly stood out.
Hawke's Bay defeated Wellington Black 14-5 and Whanganui 31-12 before drawing 19-all with Manawatu Green in pool play.
Manawatu Green progressed through to the final with an extra try-scoring bonus point and Hawke's Bay took on Canterbury in the playoff for third.
Both sides scored two first half tries and Canterbury led 14-12 at halftime. Hawke's Bay struck first after the interval to take a 19-14 lead but their next restart failed to go 10m and that was the opening Canterbury needed to work their way up field and score another seven-pointer to lead 21-19 with a minute to play. The red and blacks then sealed the 26-19 victory with a try on fulltime.
Wellington Gold pipped Manawatu Green 21-17 in the final.
Most of Wilson's training squad will be playing for their clubs in the third annual Napier Old Boys Marist Sevens tournament at Park Island on Saturday. The host club will be aiming for a third consecutive title.
"This will be a good opportunity for me to have a another look at how contenders for our final 12 play," Wilson added.