Ridden by Luke Currie, Gin Twist ($3.50) scored a 1-¾ length win from La Gitana ($5) with The Troubleshooter ($17) a further 2-¾ lengths away third.
"Two-year-olds are very hard," Hayes said.
"They either get it wrong, which we saw with Jacaranda, who dropped the bit early and didn't look comfortable, they don't know how to get into a rhythm, whereas the other two were professional, they jumped, got into a rhythm and gave good kicks.
"It's a bit of a guessing game when you're running them and I say that to the owners, they either handle it or they won't.
"We say don't worry about that as they will improve out of sight. Having a look and seeing how they handle it is very important."
Hayes said the team was placed under pressure from Coolmore Australia supremo Tom Magnier who wanted a one-two-three finish from the Hayes fillies.