"I think the best place to push a case, especially at the moment, are the New Zealand derbies that are going on," Thrush said. "That's where I can really show my worth."
Thrush scored one over Retallick and the Chiefs in Wellington on Saturday night when the Hurricanes hammered the defending champions 45-8 at Westpac Stadium.
The Chiefs' lineout again failed to fire, while it is an area of the game where the Hurricanes have thrived this season.
"We've got quite a strong core there to be able to have different options," Thrush said. "So it's hard to defend us."
The Hurricanes meet Tuipulotu's Blues at Eden Park in Auckland on Saturday night, which will give Thrush another chance to stake his claim for national selection.
Meanwhile, Hurricanes fullback Andre Taylor went for more scans on his injured ankle yesterday.
"It's not as bad as first thought but it's still quite a serious injury," said Hurricanes assistant coach Alama Ieremia.