Hi John, if you cannot catch kingfish on a lure (rapala)by the boat hook them with live needle fish hanging on a floater (ballon will do), at least 2-3 meter leader line from bait to weight and tie the baloon to your main line 2-3 meter from the weight ( when you tie the balloon on your main line make sure that you can release the ballon when you hooked one), we are doing it on shore fishing and it works pretty well, by the boat is much better perhaps, cheers.