I like hoochies and flashers on a downigger.About 10 ft off the bottom for kings. I like the superflasher(was made by Martin now by Goldenbait or Silver Horde?). For kings I like the blue with silver mylar insert. 28" to 32" leader(40lbs for action and shock resistance) and a hoochie. The hoochie color varys but a few good ones are Dark green, green, dayglow green (favorite), blue and silver, white, glow in the dark and skunk(white with black back). You can add a mylar "twinkle" skirt. ALWAYS add a herring fillet to lead hook.
When you troll you want the flasher to barely turn over. Put the gear about 30 ft behind cannonball.