At the risk of getting offside with some on my third post (you get that
) catties or any other fish for that matter don't need to be bashed to death because they're considered a pest.
At further risk of ridicule (I got no pride
) I reckon the big ones are great to catch, might not go like a barra but take a wide variety of lures, this one was taken off Lake Kununurra on a surface crawler by my young fella.
As for treating the injury, hot water's great but so to is pi$$ing on it, when its all you got its worth the shot, the pain is pretty intense.
Seen the result of a cattie left on the rocks to die, got trod on a few days later, the spine went through a wetboot and right into the foot, poor fella was in a bad way by the time they got him to a hospital.