"It would have been quite happy to have been given a good kick in the butt by some of these younger guys. They need to decide what they want to do and commit to be a full international player. It's not meant to be easy, but can be done if they remove barriers in their own minds," said Weistra who was a former professional player.
Meanwhile, Auckland junior Lilian Shih who is just 17-years-old won the women's singles title and appears to have a long future ahead of her.
She defeated Southland's Anna Rankin in three tight games in the final 21-19 9-21 21-15 in just under an hour.
Shih also made the women's doubles final but was beaten with partner, Carmen Yuen by the Auckland pair of Stephanie Cheng and Kulie Luo.
Luo picked up the mixed title with Aucklander Henry Tam who also won the men's doubles in good contest with partner Joe Wu over Ashraf Dhoray and Brent Miller.