Fullback Paiki Ponga from Cullinane College was moved from fullback into halfback and played well in both positions.
He was later named in the Hurricanes tournament team, one of only four players from the lower Saracens Cup division in the squad of 22.
The week-long tournament concluded the month of games for the Under 16 squad, with Mason satisfied with the squad's development in that time.
"[From] when I first caught up with these guys, they've come a long way.
"I got warned, they were a little green.
"There's seven of them that can come away with us next year, and the tournament's in Whanganui."
Wellington Development went on to win the Saracens Cup, while the Wellington A team retained the Don Broughton Shield for the top division.