If you are worried about goals then starting Boyd with 2 goals from 43 games seems strange. Yes, he's young and yes, he's often played on the wing but he hasn't looked like a goalscorer for NZ U-20 or Waikato either. I think Boyd should be kept on the wing.
The statistics don't explain the whole story. Its what he brings to the team that matters.
A) He's a hard worker and often tracks back when others can't be bothered to defend.
B) He can Dribble past players - This is Huge.
C) He makes a nuisance of himself. Making runs in behind, constantly moving. 2 or 3 goals last season came because he dragged a defender out of position off the ball.
D) He's 19. 7 years younger than Brockie. And i believe there is little to none of a quality difference between the two
Oh and Brockies Strike rate for the National team is absolutely stunning by the way ;)
Edit: I'm not suggesting that a pure strikers role is his best position (Perhaps he would be better on the wing), what i'm trying to say is that there is no way that Brockie should keep Boyd on the bench.