From the SMH Interesting read

[Capital_Shark]

The best way to combat abuse of the concussion rule is to have nrl appointed independent doctors doing the assessment.

Thats the best way to make sure concussed guys aren't sent back on.

What I was talking about was when you're running low on interchange cards and high on blokes needing a rest. Come out of a tackle with a wobbly boot, go see the doc (independent or not) and get the all clear within the 10-15min window and head back out. Free breather.