Maher has put a norton bit on the gelding while Declan Bates replaces Jamie Melham.
"If the weather stays, he will run at Geelong," Maher said.
"He's got no weight and looks well-weighted and he's in great order.
"I've changed the bit on him. He has grabbed the bit in past, but I'm confident he will relax and run very well.
"He's got that X-factor. I think he's the right horse, with no weight and hopefully we can sneak him into The Cup."
Maher and his team have been bullish with Gilded Water's credentials heading towards the Melbourne Cup.
"He's a big-strong horse, he's got the right form, and his only blemish was last start when he went a bit fast," Maher said.
"He needs to win, because he's so far down the (entry) list and I think it's a good idea what they have done with the lead-up to the Cup (ballot exemption), but they usually get in."
While Bates is a proven front-running rider through his association with another Maher trained runner in Pride Of Jenni, the trainer said Gilded Water does not have to lead on Wednesday.
"Dec has got form on a front runner, but he's drawn four and hopefully he doesn't have to go out and lead," Maher said.
Gilded Water heads the market at $2.20 ahead of last year's Geelong Cup winner Onesmoothoperator who is on a Lexus Melbourne Cup path once again.
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