Whenever salmon spawn is in the water eggs or egg clusters are always effective. This fly, originated by an Alaskan 'Mike Kunz' this fly is a good choice for you to bounce along the bottom (think weight) and will get you some action when the fish are in. It is big and bright.
Kunz King Killer;
Hook: Large salmon size 2 - 02, here I use a #2
Tail: White marabou
Body: Here I have used four pieces of Glo Bug yarn, 2 on top & 2 on bottom of shank.
Head: I use a little red chenille in front of the egg yarn
[Note] I have had many Rainbow / Steelhead trout snatch these up just down stream of King Salmon redds'. Also caught on this huge egg were; king salmon, and many Jacks.