That makes perfect sence to me,
Since you were fishing with lures (like I normally do) it didnt even cross my mind how good they would be as cut baits, especially with the amount of blood in them.
As for baiting them, they're a good bait if you can crank them in fast with minimal damage. rigged with a bridle and towing them around at a couple of knots works wonders. They are a Tuna in essence so you need to keep them moving otherwise they cark it pretty quickly. I've seen some big sydney kings come on live frigates, they only ever lasted a few minutes before they were either inhaled by a king, or dead.
Chris