World No.3 Lleyton Hewitt has renewed his criticisms of the Australian Open court surface, saying he had had a "gutful" of trying to persuade officials to install faster courts, but would play on "cowshit" if required to win his national grand slam.

Hewitt, who last week said the Rebound Ace surface at Melbourne Park was too slow, was backed by his coach, Roger Rasheed, who said the courts were not worthy of a grand slam tournament.

Hewitt and Rasheed made the criticisms after losing a first-round doubles match at the Next Generation Hardcourts event at Adelaide's Memorial Drive, played on a Rebound Ace surface that mirrors that in Melbourne.

"If I've got to win the Australian Open on cowshit I'll try my best to do it," Hewitt said.

"I'll go out there and I'll do everything in my power to do that and it's the same with this court.

"(Australian Open tournament director Paul) McNamee's not going to change his mind.

"It doesn't worry me, at the end of the day I've got to go out there and try to win the Australian Open and I plan to try to do that on whatever I've got to play on."

Hewitt said he thought he should have more influence on Australian tennis officials, having been world No.1.

"I'm baffled by the whole thing, I really am, and I've had a gutful of it to tell you the truth," he said.

"As I said, I'm prepared to win anything on any surface and the Australian Open means more to me than anything else and I'll go out there and compete as hard as possible.

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