Most of my largest kings come from motor mooching. Think about pulling plugs in a river. Fish tailing the boat will raise and lower, speed and slow down the line. And summer kings are looking to eat and that's why they are in close. So you don't need to be close to bottom. I usually do 25 feet so I'm probably 10 to 15 feet under the surface. Plus you don't need a steep angle. You'll get better hook sets with a faster angle. Probably gives them less time to think about it too and they just react. These are fish looking for food. They are usually in close, like kelp beds, because there's bait there and they are herding them up to scarf on or they are laying in wait to ambush bait swimming by.