"He's getting ready for the Railway so he'll improve with this run," Rayner said. "He'll be sitting behind the pace and I think he'll be right in it. He'll try himself. He's that type of horse."
Start Wondering will be ridden as usual by Johnathan Parkes and is likely to have one further build-up run for the Railway.
"We'll find a race for him somewhere just to top him off for the Railway," Rayner said. "He'll go along the same path as last season. There's not much else for him."
Meanwhile, Lisa Latta will be much the wiser about Platinum Volos after the three-year-old's black type debut at Otaki.
The Awapuni trainer is stepping into unknown territory with the son of Dalghar in the group three Lucia Valentina Wellington Stakes (1600m).
Platinum Volos has made a bright start to his career with two wins and two placings from his six appearances, including a last-start second over 1400m at Riccarton behind the highly-regarded filly Savvy Coup.
"He handled the better track down there, but it's hard to know at this stage whether he will handle the mile at Otaki. It's a question mark," Latta said. "It's a bit difficult to know if he was coming to the end of his run over the 1400m at Christchurch or not. It was his first trip away and he has done well since he came home."
Masa Tanaka will guide Platinum Volos' fortunes from the outside gate in the Levin Racing Club's feature.
"The wide draw is a bit of a concern as well, we'll just have to hope for a little bit of luck from out there," she said.
Platinum Volos' performance over the mile at Otaki will determine his summer programme, with the grey gelding eligible for the $1 million Karaka Million 3YO Classic (1600m) at Ellerslie on January 27.
"We're going to learn a lot more about the horse tomorrow and whether we look to take him to Auckland," Latta said.
- NZ Racing Desk
