Canberra coach David Furner has urged the NRL to consider reforming the for-and-against points system so clubs that lose tries through refereeing blunders are adequately compensated.

No doubt still smarting from a tight 24-19 opening-round loss to Melbourne, Furner said on Friday the NRL should do more than acknowledge errors by the referees, but attempt to rectify them.

It comes after video referee Phil Cooley was sacked for incorrectly ruling Melbourne prop Bryan Norrie was onside during an early Cooper Cronk try - a mistake NRL referees boss Bill Harrigan labelled unacceptable.

Furner also vented concerns about a disallowed try to Raiders' winger Blake Ferguson that would have given the home side an all-important lead heading into halftime, but Harrigan backed the decision to call the pass forward.

The Raiders coach said that in such a competitive year, re-calibrating the for-and-against tallies could mean the difference between a club making the finals or not.

"With that try that was awarded to the Storm and the one disallowed to the Raiders, is there a chance that although in that case the Storm get the two points that you get to rectify your for-and-against?" Furner asked.

"If it needed to be awarded a try and it wasn't, or vice versa, there could be a way there to take four points away or six points away or add, which will affect the for or against."

Furner didn't say if he intended to raise it directly with NRL officials, but said it should be an issue up for discussion.

"There's going to be discrepancies in those sorts of rulings ... that's part of the game.

"You can't change the two points and I'm not looking at that, but certainly in this competition, for-and-against is going to be massive."

In a bid to improve ref calls, the NRL is reportedly considering trialling a coach's or captain's challenge, as seen in American football, which would allow the coach or skipper to immediately demand a review of a contentious incident.

Each team would get a challenge per half, and another in golden-point time.

Furner said he would have to have a closer look at the proposal before giving it his thumbs-up.