The Labor Government want to get onto this quickly and quietly! This is such a culture war risk for them. Also, with the geopolitical way the world has turned, theres a real national security angle to making sure the borders are patrolled adequately, however costly that is.
Of course whatever they do they have to remember Dutton's mantra, "We don't comment on, on water matters."
Also, are these fishermen charged with things like illegal entry, and illegally fishing? Surely theres criminal remedies that come into play at some point otherwise theres no deterrent.