I hate to brag a bit, but I'm 3 for 3 this season.
5 pound king
15 pound king
22 pound king
I'll email you a pic of my setup with the 15 pounder in my lap.
I hit Arcadia, Frankfort and Manistee the last several weeks.
The fish are much shallower now and I've had the best luck within the harbor areas (surrounded by the piers) and just outside.
I use Slide Divers (http://www.slidediver.com/
) in order to get to the right depth and not have to fight both the lead weight and the fish. These slide divers have the unique ability to allow long leader lengths and only slide back to the barrel swivel several feet from the lure after the fish strikes. Now you don't have to unclip a lead weight while fighting the fish.
When it comes to fighting the fish, make it easy on yourself and use the 'yak itself to simply keep a good bend in the rod and let the fish pull you and your rig around, this tires the fish right out and is by far the most fun part. Next tricky part comes when the fish is right alongside flopping around. If the fish is sizeable, you don't want it flopping around, especially with that mouth full of hooks. Pedal and steer slightly away from the fish until it isn't flopping around and can be boated safely. Then you need to carefully slide it into the 'yak with the hooked end pointing away from you.
You can also jig for these salmon with hardware. Generally setup so that you can "see" your own jigging spoon on the fish finder and start at or near the bottom with about a two foot high jigging motion, pause a second or two and jig again. It's definitely not rocket science, but persistance truly does pay off.
I also have to reach a bit and pull a bit in order to remove the rod from the rod holder after the fish strikes. For me good quality extremely sharp hooks (many lures come with hooks that aren't really sharp enough; the hook point should easily scratch the surface of your finger nail) go a long way toward the fish simply hooking themselves and staying hooked, then I can take my time getting the rod out of the rod holder and the fight is on (actually more of the fish pulling and me simply holding on and reeling a bit, pedaling a bit and controlling the rudder a bit).
The 22 pounder pulled the 'yak and myself around the Frankfort harbor twice before she was under control enough to come visit me.