The league has told umpires to call ‘play-on’ if the ball has not been kicked in, just six seconds after the umpires’ flags have been waved.
"It’s going to be a lot harder in general play," McMahon told NMFC.com.au.
"You’ll have to sprint in, pick up the ball and you’ve pretty much got a second to weigh up your option and then he’s (the umpire) going to call play on.
"It’s going to rely a lot on the midfielders pushing back, the defenders pushing in to give you an option."
While he sits out of Sunday’s match due to suspension, McMahon says it won’t take players long to adapt, particularly when a forward is lining up at goal.
"With a set shot we’ll already have people on the line," he added.
"There should be someone right near the bag. As soon as you see it’s going for a point, the umpire signals, you can grab the ball.
"You should be in the square before the flags are waved, so then you’ve got the six seconds to pick the best target."
Watch the video above for a demonstration from McMahon on the new rule | YouTube
