Fremantle assistant coach Chris Scott says the Dockers are preparing themselves for a stoppage barrage ahead of Saturday's AFL clash with Sydney.

The Swans are renowned as the competition's specialists when it comes to congested football, especially at the pint-sized SCG, and Scott said the battle at the stoppages would go a long way to deciding the outcome of the match.

"We could say we want to open the game up and play free-flowing for four quarters but we know that won't happen - Sydney don't allow it," Scott said.

"Not that we are going to try to fight fire with fire but we just know we need to be able to match them, not only at the stoppages but just in the congestion.

"You are going from our home ground, which is the biggest in the competition, to the smallest in the competition so it does take a slight adjustment to your game style.

"Sydney play very well in congestion so we're going to need to adapt to that.

"Having said that we've got some pretty strong forwards in some good form at the moment and the small ground gives you the opportunity to get it in there quickly.

"Hopefully if we can do that they can take advantage of that."

The Dockers have beaten Melbourne, Port Adelaide and West Coast in the past three rounds but Scott said the team wasn't getting ahead of itself.

"We are not kidding ourselves, we've played three sides that are around us on the ladder so this is going to be another step up or two again this week," he said.

"(Our aim is) continuing the form we've shown in the last few weeks but, having said that, we're going to have to play better than that to win against Sydney at the SCG."

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