The Roosters have previously shown they aren't afraid to give away a penalty so their goal-line defence can get set and they back themselves to repeatedly repel opponents.

It hasn't been uncommon for Trent Robinson's troops to take on the challenge of surviving multiple sets until they force an error.

But the 2018-19 champions may have to change tack in 2021 because referees can now award six-again to the attacking team for 10-metre offside offences as well as ruck infringements.

The Tricolours gave away the most "offside inside 10 metres" penalties across last year's 20-round regular season with 33, ahead of premiers Melbourne (27), Gold Coast (26) and South Sydney (25).

While the Bondi Wall has held firm more often than not after conceding a penalty in recent times, the Roosters are unlikely to want to incur a plethora of six-agains and increase fatigue.

Twelve of the 54 tries conceded by Robinson's men last year came on the back of penalties with another nine following ruck infringements.