A brilliant win by It's Somewhat in the Doncaster Mile has boosted Brisbane trainer Desleigh Forster's confidence about Cylinder Beach in the Toowoomba Cup.

Cylinder Beach had one run in Sydney beaten 2-1/2 lengths into seventh place behind It's Somewhat in the Group Two Ajax Stakes, and heads to Saturday's Toowoomba Cup (2000m).

"It's Somewhat has come out and won the Group One Doncaster so it isn't bad form for a Toowoomba Cup," Forster said.

"I just hope Cylinder Beach isn't given the grandstand by the handicapper."

Forster had been toying with the idea of starting Cylinder Beach in the Open Hcp (1600m) at Doomben on Saturday but decided against it.

"As it turned out he would have had to run on a wet track under a big weight," she said.

"The Brisbane Race Club offered me a chance to work him on the Doomben course proper which was much appreciated."

She sent Cylinder Beach to work with stablemate Sweet Red Wine over 1400m, with the pair quickening over the final 600m.

"Cylinder Beach was too strong for Sweet Red Wine but you would expect that. They broke 33 (seconds) for their final 600 metres so it was nice work," she said.

Forster is looking at the staying handicaps for Cylinder Beach during the winter carnival.

"I would like to get him out to the Brisbane Cup (2400m) and Saturday is a good way to start," she added.

Forster's other smart four-year-old Too Good To Refuse will run in the Listed Tails Hcp (1600m) in three weeks en route to the Group One Doomben Cup on May 20.

She was happy with Too Good To Refuse's second behind Brazen Moss at Doomben on Saturday.

"He hit the lead too easily and wanted to pull up and didn't see the winner until too late. It was a good run on a wet track," Forster said.