"I'm on a bit of a high to be honest," Lowry said.
"To score 15 goals and concede none in three games is a great effort.
"Without Jack we knew people would be looking at us and pointing the finger, but Andrew Cooper has filled Jack's boots very well."
Cooper twice had stints under Lowry at Matamata before signing to play for Old Blues under Grant Turner last year, and impressed the former All Whites midfielder with his pace and attacking instincts.
In the offseason Turner told Lowry that Cooper was too good to be playing in the WaiBOP competition, facilitating his move to Links Avenue to form a potent attacking force alongside McNab and English import Jerahl Hughes.
Connor Taylor, Jack Chaney and Josh Nelson underlined the side's balanced, possession-based attacking structure by adding second half goals in the 8-0 dismantling of Lynn Avon in a match in which goalkeeper James Pamment was reduced to a virtual spectator.