i think jigging is a very precise way of fishing like the others have said. Location is very important. need to find an offshore reef where the kings might be, try the peak or 12 mile, we've had some luck there previously.
i use a jigging rod reel combo (shimano spheros with a jig stick) and you can feel the diference from a standard rod and reel. As nectic said overheads are not practicle, go for the egg beater and braid line is a must.
Also, if you get to your location and the waves are to big or the current is fast, pack up and head in. dont get much on those days.
JayKay