If you're heading out to the Olympic Peninsula this winter, you've probably heard someone raving about the hoh bo spey and how it handles the heavy water. It's not just some fancy name for a fly; it's basically the gold standard for swinging flies in the Pacific Northwest when the rivers are running high and cold. There is something almost magical about the way this specific pattern interacts with the current, and if you haven't tied one on yet, you're missing out on one of the most effective tools in a steelhead angler's box.
For anyone who has spent time standing waist-deep in a freezing river, you know that gear choice isn't just about looking the part. It's about efficiency. The Olympic Peninsula—home to the legendary Hoh and Bogachiel rivers—demands a lot from your equipment. You need a fly that can sink fast, move a lot, and look like a living creature even when the visibility is less than ideal. That's exactly where the hoh bo spey excels.
What makes this fly so different?
The fly was originally dreamed up by Charles St. Pierre, a guy who knows a thing or two about these waters. The genius of the design lies in its simplicity and its movement. Unlike some of the older, more rigid patterns that look like stiff brushes in the water, the hoh bo spey is built on a foundation of marabou and ostrich herl.
When you hold it in your hand, it looks like a bit of a mess—just a bunch of feathers and maybe some flash. But the second it hits the water, everything changes. The marabou collapses and then expands with every pulse of the current. It "breathes" in a way that very few flies can replicate. Because the materials are so soft, they don't resist the flow; they dance with it. It's that lifelike vibration that triggers the predatory instinct in a winter steelhead, even when they're feeling lethargic in forty-degree water.
Dealing with the Hoh and the Bo
The name itself is a nod to the two rivers where it earned its reputation: the Hoh and the Bogachiel (often just called the "Bo"). These rivers are famous for their "emerald green" hue, but they can turn into a chocolate milk soup pretty quickly when the rain starts dumping.
When you're fishing the hoh bo spey on the Hoh, you're usually dealing with a massive volume of water. You need a fly that can get down into the buckets where the fish are holding without snagging every rock on the bottom. The way this fly is tied—typically on a shank with a trailing hook—allows it to swim true. It doesn't keel over or spin, which is crucial when you're trying to maintain a consistent swing speed through a long run.
On the Bogachiel, things can be a bit tighter. The river is smaller, the swings are shorter, and you're often casting under overhanging alder trees. This is where the "spey" part of the name really comes into play. Because the fly is relatively light for its size, it doesn't feel like you're throwing a wet sock. You can cast it with a light Skagit head and a heavy sink tip without blowing out your shoulder by lunchtime.
The importance of the sink and swing
Let's talk about the mechanics for a second. If you're using a hoh bo spey, you're almost certainly fishing a Skagit setup. The whole goal is to get that fly down deep, fast. You cast across the current, maybe give it a big upstream mend to let the fly sink, and then let the tension of the line pull the fly across the river in an arc.
The "swing" is where the magic happens. As the current grabs the line, the fly starts to move laterally across the riverbed. This is when those marabou fibers really start to do their job. They pulse and flutter, creating a silhouette that looks much larger than it actually is. To a steelhead sitting in a soft pocket behind a boulder, that profile looks like a meal worth moving for.
I've found that the hoh bo spey is particularly forgiving if your casting isn't perfect. Even if your loop is a bit sloppy or your mend is a second too late, the fly is so active that it usually fixes its own presentation as soon as it gains tension. It's a very "fishy" fly, if that makes sense. It just looks like it belongs in the water.
Choosing the right colors for the day
One of the best things about the hoh bo spey is how easy it is to customize. You go into any fly shop in Forks, and you'll see bins full of them in every color combination imaginable. But if you're trying to keep it simple, there are really only three or four "must-haves."
- Black and Blue: This is the absolute classic. In the clear or slightly tinted water of the Olympic Peninsula, black creates the strongest silhouette. The blue adds just enough flash to catch the light without being overwhelming.
- Pink and Orange: When the river is "big" and the visibility is low, you need something loud. A bright pink or orange hoh bo spey can be seen from much further away, which is helpful when you're trying to cover a lot of water quickly.
- Purple: I don't know what it is about purple, but steelhead love it. It's a great middle-ground color that works well in almost any light condition.
- White and Silver: This is a bit of a sleeper pick, but on bright, sunny days (which are rare, I know), a white version can mimic a smolt or a small baitfish and trigger some really aggressive strikes.
Rigging it up the right way
To get the most out of your hoh bo spey, you have to think about your leader. Since the fly is usually tied on a shank, you're going to be using a "stinger" style hook. This is a game-changer for hook-up ratios. Instead of a long-shanked hook that can act as a lever and pop out of a fish's mouth, the small, sharp trailing hook stays buried.
I usually run about three to four feet of heavy fluorocarbon (12lb to 15lb test) from my sink tip to the fly. You don't want a long leader here. If your leader is too long, the fly will ride higher than the sink tip, which defeats the whole purpose of trying to get deep. Keep it short, keep it heavy, and let the hoh bo spey do the heavy lifting.
The feeling of the take
There is nothing quite like the "grab" when you're swinging a fly for winter steelhead. It's not like trout fishing where you see a rise or feel a little tick on the line. With a hoh bo spey, the take is often violent. You're holding the line, waiting for that rhythmic swing to finish, and suddenly, the rod just doubles over.
The best advice I can give is: don't set the hook. It sounds counterintuitive, but when a fish hits a swinging fly, they usually hook themselves against the tension of the line. If you jerk the rod back the moment you feel something, you'll likely pull the fly right out of their mouth. Just wait. Let the fish turn, let the reel start screaming, and then—and only then—lift the rod to ensure the hook is set.
Why it remains a favorite
Even though new "super flies" come out every season with more beads, more rubber legs, and more complicated tying steps, the hoh bo spey remains a staple. It's a testament to the fact that you don't need to overcomplicate things to catch fish. It's a fly built on experience, designed for specific rivers, and refined by people who spend more time on the water than they do anywhere else.
Whether you're a seasoned spey caster or someone just getting into the world of two-handed rods, having a few of these in your box is a non-negotiable. They're fun to cast, they're easy to see in the water, and most importantly, they catch fish when nothing else seems to be working. Next time you find yourself standing on the banks of the Hoh, staring at that beautiful, cold, green water, tie on a hoh bo spey and see what happens. You might just find yourself hooked on the swing for life.