Geelong coach Mark Thompson said the introduction of a send-off rule in the AFL following Barry Hall's hit on Brent Staker would be silly.

Hall, who was suspended for seven weeks after knocking out Staker last Saturday night, has confessed he should have been given a red card for the incident, similar to what is employed in soccer.

But Thompson says he hates the idea of changing rules in football without proper examination.

"I don't like compulsive change of rules," Thompson said.

"Any change of rule should be well and truly debated, thought out, communicated and I think to change it on one punch would be quite silly."

The reigning premiers meet Sydney at Skilled Stadium on Saturday but Thompson said Hall's absence from the Swans line-up won't be the difference between the two sides.

And he is unconcerned with his side's failure to kick more than 90 points against the Swans in their past eight clashes.

"They've got the best defence in the competition," Thompson said.

"They're really strangle you and make it hard to score that's the sort of game it's going to be."

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