Greetings lawrence_court,
All the above recommendations are good ones.
But bear
in mind that, just as Scott CWO has already mentioned, here in Alaska, our king salmon numbers are dwindling.
I will add that there are still some kings to be found but, king fishing in Alaska ain’t what it used to be.
Everyone is pointing the finger at each other, regarding who, why and what caused the numbers to crash.
Whatever happened, it sure did clobber our fish.
Anyway, judging from your above question, I figure that you’re already a thoroughly experienced fly rodder.
So forgive me for posting such elementary details.
They are primarily aimed at readers who might be just starting to become interested in fly fishing for salmon, especially kings.
So anyway, bring a stout rod, 11Weight or heavier.
And, although up to a 14W rod seems like overkill it really isn’t, if you tie into several big ones during a short duration of time.
That said, after the first half hour or so, casting repeatedly with a 14W is not much fun.
It’s a bit like waiving a shovel over your head all morning.
For all 5 species of AK salmon, I like to use various speeds of sink tip lines, depending on water conditions.
I carry mostly fast sinking ones, and I always keep handy, various length ones (2’ through 10’) that loop on and off the end of standard floating line.
And specifically for kings, I favor 40# test leaders / tippets in root beer color monofilament, fairly short, 3’ is my favorite king leader / tippet.
Our salmon here do not seem to care whether our leaders are tapered or not.
A small king salmon will weight 15 - 20 pounds and can fight like a crocodile.
A largish king here usually is around 40 to 45 pounds, but can go much heavier in rare instances, in certain rivers that seem to inspire excellent genetics.
A 40+ pounder can fight like godzilla, especially in swift water.
Figure out where their “cruising lane” is and fish in it deep, right down in the bottom of it.
And fish slow, keep your hooks needle sharp and don’t mistake the king’s usual (not always) soft strike for anything else.
They do not feed in fresh water so, their “bite” is often very subtle and dainty.
Depending on what patterns and colors you throw, they’ll take your fly, possibly thinking its a clump of their own species eggs and they’ll try to move them to a safe spot to spit them out there.
I like to use a simple blob of bright orange yarn for this, about half the size of a golf ball.
Or, they’ll sometimes mistake your pattern for a small predatory specie of river fish (trout, grayling, etc.).
One theory is that the king will nip at it, in an effort to run this pesky minnow off.
The simple streamer known as a “flash fly” or “tinsel fly” is a favorite of mine for this.
I have also enjoyed sporadic success with a fly that is a combination of the above two very simple patterns.
Moving right along, sometimes it feels like your fly just slightly bumped on the gravel bottom or whatever, as it rolls along in the current down there.
And of course there will be some bumping of inanimate things along the bottom as well which, feels about the same.
However, when you set the hook into a king salmon, dig your heels into the sand and grin, as you will have a grand and wonderful battle for a while.
Oh ya reels, I recommend one with a stout but smooth drag feature.
The Billy Pate Tarpon model is a very good one but, there are others just as good.
Again, my rant here is not so much for the seasoned fly fisher, such as yourself.
It is more for anyone that perhaps wants to give it go someday.
Tight Lines,
Velo Dog.
PS:
Below is a teaser pic of my eldest son Danny ( AH screen name DoubleLunger ) with a 40-45 pound king on a fly rod.
It was back 20+ years ago when, Little Willow Creek (75 miles north of Anchorage) still had abundant kings running in it each June - July.
The rod was an 11W and the reel was an Alvey (Australian made and stoutly built).
Please forgive the crummy picture.
I obviously don’t know how to properly post photos here, without them dragging other things along for the ride.
Believe me, I am not doing that myself, it’s the computer’s thing.
Also, I hope the pic shows up at all.
Because now said photo just disappeared.
So I tried to post it again (several times).
But, so far no success.
If it later pops up, I will be delighted.
If not or, if several of the same pic finally show up, I apologize for that as well.