He's not goalscorer and we know it. Maybe he will maybe he won't. We need his pace, technique and assists. You won't make him an effective ss in 3-5-2 no matter what. In 3-5-2 you need strong forwards that can hold the ball as 3-5-2 is defensive formation so after getting the ball back always requires to wait until our players move forward. Giovinco doesn't have that ability and you won't change it.
All I'm saying we should use his abilities in the better way which I believe is more offensive tactic like 4-3-3, 3-4-1-2, 4-3-2-1, or even 4-3-1-2.
You don't see Insignie playing as ss for Nipples because of the same reasons Gio can't play this position.