RICHMOND coach Damien Hardwick has delivered a warning to Port Adelaide's defenders preparing for Friday night's date with Tom Lynch. 

"Good luck." 

Hardwick backed Lynch to continue his aggression in the preliminary final despite being hit with his fifth charge of the season from the Match Review Officer for kneeing Saint Dougal Howard last week. 

"What he (Lynch) brings to the side is the ability to get the ball to ground (at contests)," Hardwick said on Wednesday. 

"There was a massive contest (against St Kilda) there where young (Ben) Paton ended up getting his head split. That's what Tom brings; he brings aggression. 

"If someone wants to take his space, good luck.

"The very best sides will play the hardest brand of footy and we're going to overstep the mark sometimes. 

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"Do I want us to be giving away stupid free kicks or 50m penalties? No, I don't. 

"The players understand that, they accept that responsibility, we've got to get better in that part of the game. 

"The game's going to be pretty volatile, going to a hostile environment against a very, very good opponent. We want to play on the edge." 

Hardwick admitted the Tigers were strongly considering recalling ruck/forward Mabior Chol to partner Toby Nankervis and tackle Power pair Scott Lycett and Peter Ladhams. 

The Tigers used defender David Astbury to back up Nankervis last week but concede the second ruckman provides more flexibility. 

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"They're (Power duo) both tall boys, they're both 200cm … it's probably less likely than more likely at this stage," Hardwick said on the possibility of using Astbury in the ruck again. 

"You can get by (with one), but the reality is we went in a little bit with that set-up in the first final with 'Mabes' and 'Nank', but 'Mabes' played predominantly as a forward. We probably in hindsight would've changed the set-up. 

"We think we do like the look of the second ruck. It gives us some sort of back-up and it allows 'Nank' to play less game time where he's more dynamic."

The Tigers brought in the boundary on their training ground on the Gold Coast on Wednesday to adapt to the skinnier dimensions they'll face at Adelaide Oval. 

"It's presents a different set of challenges. It is a relatively easy ground to defend. If we win the territory battle that's going to help us," Hardwick said. 

The Tigers will fly to Adelaide on Thursday before heading to Adelaide Oval for a captain's run in the afternoon.