Forget livebaiting with coutas. If you manage to hold one down and hook it through the back once you put it in the water it will make a serious nuisance of itself. My bet is that it will find the trace and bite it off. Trouble is that in the absence of kahawai you’re lacking a mid-sized pelagic fish to use as livebait. That being the case i’d focus on sharks with big deadbaits, maybe whole skipjack. I’d try and sail that out with a beach ball or a blown up rubbish bag off one of the deep beaches in a stiff norwester. With braid you could spool up a huge amount of line and get your bait into blue water.