CARLTON coach Mick Malthouse has slammed the AFL's decision to trial Hawk-Eye technology mid-season as a "knee-jerk" reaction from league officials who should "grow up".
The AFL will this weekend test the technology, renowned for its use in cricket and tennis, as part of an attempt to improve the contentious goal review system.
It will be available for the first time in an AFL match when Malthouse's team and his former club Collingwood clash at the MCG on Friday night.
"It didn’t help us two weeks ago," Malthouse told reporters at Visy Park on Thursday, referring to an incident in which a goal kicked by Blue Jeff Garlett against Essendon was incorrectly judged by the goal umpire to be a behind.
No review was called for in that case.
"If you’re going to bring things in, bring them in at the beginning of the year," Malthouse said.
"Grow up, don’t knee-jerk, and don’t find out that there's something available at round 15 when it was available round one."
When it was suggested that at least the AFL was trying to improve its system, Malthouse responded: "Don’t make excuses for the AFL. There's already enough excuses.
"With an organisation that is that big and (has) that many people … it's a conglomerate that's stuck down at Docklands, and they're going to wait until round 15 to discover that there's some mechanism that actually gets it right. Turn it up."
A League spokesman told AFL.com.au: “The AFL is not using the technology trial this weekend as part of the decision-making process at any time. The system is being examined to see how it may operate under match conditions, if it was approved for use in future seasons.”
The Blues have a precarious 6-7 record and are ninth, two games shy of the eighth-placed Magpies.
Malthouse said skipper Marc Murphy (cheekbone) and fellow midfielder Andrew Carrazzo would be considered for selection. Murphy didn’t train fully on Thursday and will await medical clearance.
The Carlton coach revealed that impressive first-year draftee Nick Graham, who has performed strongly in three VFL games since returning from a knee injury, could make his AFL debut against the Pies.
However, Malthouse wouldn’t buy into any talk about the personal importance of posting a win over Collingwood, which he left in acrimonious circumstances at the end of 2011.
"None," he said when asked if the Pies' clash gave him any extra incentive.
"I said it round two (and) I don’t think anything that happened in between is going to change that."
Malthouse estimated there had been as much as a 50 per cent change in personnel at Collingwood since he left the club, and added that his intimate knowledge of its players hadn't helped the Blues in round two, when they went down by 17 points.
Malthouse said his team had improved by "up to one-eighth" since the start of the season.
He admitted his players hadn't been ready to execute the plan he had initially tried to implement, adding that it took four years for his 'press' strategy to culminate in a premiership at Collingwood.
Malthouse said he had made subtle changes to the game plan during the opening four rounds and there had been further change since, but he was now "very, very satisfied" with it, while acknowledging the Blues still needed to beat the best teams.
Ben Collins is a reporter for AFL Media. Follow him on Twitter: @AFL_BenCollins