Geelong coach Chris Scott hopes the happy surprises keep coming as his unbeaten AFL side head into a testing fortnight.

The Cats are unbeaten after three games and extended their Skilled Stadium winning streak to 24 on Sunday, smashing winless Port Adelaide 17.20 (122) to 6.7 (43).

They now head north to play Sydney and then take on Hawthorn at the MCG - two other sides who have impressed so far this season.

The new Cats coach admitted after the 79-point belting of the hapless Power that he did not think his players would be quite so hard and committed.

After three straight grand finals from 2007-09 for two premierships, the Cats lost to premiers Collingwood in last year's preliminary final.

Scott has acknowledged the queries about Geelong's short-term future, but after a scratchy first quarter there was no doubting the way they took care of Port.

Geelong and the Magpies are the only teams with 3-0 starts.

"We're not kidding ourselves, we could easily - easily - have been 0-2," he said of the tight wins over St Kilda and Fremantle.

"I'm pleasantly surprised at how hard the group are and how the motivation seems to be a really high level.

"There was every possibility that a few of these guys could take the foot off when it became a little bit tough - I haven't seen it at all through the pre-season and I haven't seen it so far in the regular season.

"But we're going to be tested a lot more than we have so far ... the next fortnight will tell everyone a bit."

Geelong tested Scott's patience in the first term as the Power led the tackles 11-4 and the inside 50s 14-11.

By the end of the game, Geelong had doubled Port's inside 50s - a whopping 72 to 36.

An intriguing feature of the Cats' win was their versatility - they had 13 goalkickers and no-one kicked more than two.

Key forward Cam Mooney played as a defender and ruckman, while Daniel Menzel also went back and Cameron Ling spent time in attack.

"To beat the best sides ... we need a big group of contributors," Scott said.

"We're fortunate, we're not trying to put players in situations they can't handle - everyone we put in those sort of environments, (they) have the capability to perform.

"The signs are positive."

Jimmy Bartel, with 13 marks, was best for Geelong and Chad Cornes stood out on a horrible afternoon for the Power.

Geelong's home winning streak is now only two short of Brisbane's AFL record, set during their 2001-03 premierships.

Port will need a massive improvement to be competitive in next Saturday night's Showdown against Adelaide and coach Matthew Primus said there would be personnel changes.

"There will be fresh faces coming into the team - it's probably nearly gone, the same group," Primus said.

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