Fishing in the kelp and outside of the kelp are 2 very different things.
When in the kelp, you pick your spot and anchor/tie to a stringer. Drop whatever you're fishing on down, how ever deep you think the fish are, and wait...
You generally put a bit more weight so your live bait can't go to town, get itself tangled. Really boring up until you get picked up, if it ever happens.
Working outside of the kelpline I like. A lot of it you control, but you have to be aware of the kelp around you/under you, try not to get too close so your bait ends up tangled in the stringers. It helps to keep moving - you cover more ground, plus you don't let that mac swim too deep and bury itself in the stringers. As you stop, your macs will likely go deeper. If you're trolling two greenies behind you, you never know if your "high" one is really closer to the surface than your "low" one. On the clicker, they can swim wherever they want. Then if one of them gets tangled, you stop to take care of that, the other one finds a way to do the same - gets pretty frustrating. If I fish close to the kelp, I often choose to have only one line in the water, with very little or no weight on it.
It helps if the current is ripping - it pins the kelp down so you have more of an area of submerged kelp, more of a stringer free chunk of upper column water... not to mention that it generally gets fish on the roll.
Now, actually landing one once you hook up...
Well I'm sure you'll find various preferences.
When after WSB in the kelp, I like fishing tight drags and use really noodly lighter grade rods that absorb those violent head-shakes you'll get right after the hook up. I try not to let them get into the salad too deep. As you feel the stringer rubbing, keep the pressure on - given you got spectra and the fish is green, the fish will help you get out of trouble, cut the stringer(s). Keep that pressure on, try to constantly turn their head toward you. The first minute is usually intense, but they loose some steam after that and becomes a little easier.
It the fish does get stuck in the kelp, don't rush it. Take your time, work it, don't pull too hard. Do the tug war, give some line to the fish, take it back... try to move around, change the angle... Just don't get frustrated so you pull too hard, too soon.... and break your line and your heart.
Or even better - call nearby spearo to help you out
(note for WCW - those fish are not eligible for submission
).