Gai Waterhouse will use the next two weeks to plot a way to defeat So You Think with More Joyous, who she described as absolutely top class after setting a weight-carrying record for a mare to win the Group One Toorak Handicap.Shouldering 58kg, More Joyous took a moment to find her gears in the straight before charging into the record books in emphatic fashion in Caulfield's feature "mile" on Saturday.Waterhouse was lavish in her praise of the mare who firmed from $8 to $4.50 with TAB Sportsbet

Gai Waterhouse will use the next two weeks to plot a way to defeat So You Think with More Joyous, who she described as absolutely top class after setting a weight-carrying record for a mare to win the Group One Toorak Handicap.

Shouldering 58kg, More Joyous took a moment to find her gears in the straight before charging into the record books in emphatic fashion in Caulfield's feature "mile" on Saturday.

Waterhouse was lavish in her praise of the mare who firmed from $8 to $4.50 with TAB Sportsbet for the Cox Plate less than an hour after So You Think justified his $1.75 favouritism for the $3 million feature with a sensational victory in the Group One Yalumba Stakes (2000m).

Both Waterhouse and jockey Nash Rawiller refused to concede the Cox Plate to the Bart Cummings-trained superstar and are looking forward to the challenge of meeting him in Australia's weight-for-age championship.

"She really was impressive," Waterhouse said.

"About a furlong and a half (300m) out I thought there's no way in the world we're going to pick up with this weight and get past them, but I just love the way she grittily just came at it and came at it and then the last 50 metres I said `Done, I've got it'.

"You've seen the two (horses) who will be the main contesters of the Cox Plate and both have been extremely impressive."

Asked how More Joyous could beat So You Think in the Cox Plate, Waterhouse replied: "I've got two weeks to think about it."

She said it was a test for More Joyous with the big weight on Saturday and she was a deserving winner.

"We think she's the best mare we've got in New South Wales so she should be winning a handicap like this," Waterhouse said.

"She is top class, absolutely top class,

"There is no mucking about with her, that's what's so lovely.

"She's feminine, she's very, very physical and she just fills the bill as you saw today."

Rawiller said More Joyous just kept getting better.

"Nothing surprises me with her," Rawiller said.

He said he feared More Joyous was feeling the big weight when she appeared to flounder at the 300 metres but she was only changing stride.

"I thought she may have been feeling the weight a fraction but she was basically on the wrong leg for about 100 metres," Rawiller said,

"She is probably used to getting onto the other leg to let down and that was what she did.

"Once she got her rhythm she really hit the line good."

Rawiller said the Cox Plate was a challenge that he welcomed with More Joyous who has now won 10 of 13 starts.

"She will give him (So You Think) a terrific run for his money," Rawiller said.

"She has got it all ahead of her."