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Fishing upstream or downstream?

Fishing upstream or downstream?

The long-standing question from a tenkara perspective

Many times inspiration for our blog posts comes straight from the great community of tenkara anglers hosted in our forum. In recent days two threads were posted in our forum related to the idea of fishing upstream or downstream: "How do you prefer to fish with tenkara- upstream or downstream?" The forum threads are great because they present questions many of us ponder, but perhaps don't bother thinking much about. They usually force me to think of "why", sometimes providing some new insights. This post is basically my answer to how I tenkara fish, and why I fish upstream. Answering it made me realize that, even though there is a long-accepted theory that fish can see better if you approach them from upstream (that is, fishing heading downstream), I really don't buy into it, but rather, fish upstream because of a couple of more practical reasons.

I think there may not be a wrong direction to fish as long as the approach is well planned, but as I will write below, I think fishing upstream has at least three advantages: (1) a good chance of not being seen by fish if you're in a steeper tumbling stream, (2) greater ease at spotting stream features, and (3) a larger number of presentation possibilities.

A couple of weeks ago I went fishing with Ralph and Lisa Cutter, very well known and respected anglers. They own the California School of Fly Fishing. Ralph is most well known for his underwater studies of fish and bugs - he dives a lot and, with his years of research and experiments, knows what fish can or can not see. He said he always prefers to fish downstream. I brought up the idea, which I don't personally buy too much, that fish would be able to see you more easily this way; he said that's nonsense, fish have an almost 360' field of view, with a very small blind spot directly behind them, but as they are constantly moving, swinging with the current, their actual field of view is 360'. The reason he likes to fish downstream is a practical one: he says he is a very visual angler, and can see the white in a fish mouth more easily that way and thus strike the hook when that happens.

I may understand the field-of-view reasoning for slower moving streams and flatter streams. However, when fishing in a steeper stream, even if fish may have a 360' fov, one advantage of fishing upstream is using the geography of the stream to help hide you. In a steeper stream, it can be common to find large rocks upstream, and the natural "falls" and turbulence of the water can do their part on this too. On the same token, I think it is much easier to see features in the water when you're moving upstream. if moving downstream all can blend in a bit more easily, features become "flatter" as the boulder breaking water above a spot will now hide it, you can't see the whirlpool forming so well because the water dropping into it may be hiding it. I haven't taken pictures with this in mind, but above this paragraph is a picture of a stream looking downstream on it. To me it looks relatively flat, and though I can't see places where fish may be hiding, I can't see them all that well. The picture below shows the contrasting image, the same stream but looking upstream, you can see a lot of features that may be holding fish. Not to mention that if you're wading downstream, you could potentially step into a deeper pool without noticing it, but that is more easily avoided if moving upstream.

Fishing upstream reveals the stream features more clearly.

My tenkara sensei, Dr. Ishigaki prefers to head upstream. I haven't asked him exactly the reasons why he does so but will in my next email. He never fishes moving downstream. BUT, he frequently does fish straight across, and occasionally a little downstream too if he finds the need to, as he moves upstream. Because he prefers fishing upstream, his first casts will almost always be upstream. As he moves up he will often hit the same spot from two, sometimes three different directions if he believes there are fish there: so, upstream, 1/4, straight across. You can see a summary and illustrations of the main tenkara techniques in our past blog posts. His general approach, and mine is: keep moving upstream, because we're moving up our first casts will almost always be about directly upstream, with a drag-free drift of the fly. If there are features (small whirlpools/currents/etc) 1/4 upstream, then cast to those too. Try 3-4 casts in each of these directions. Now, you move up and the pool that used to be upstream or 1/4 upstream from you is straight across and you can try fishing that spot for a totally new angle and with new technique. By casting straight across you can manipulate the fly in different ways (stop the fly, let it drift, stop, let it drift; or stop, pick up, stop, pick up; or casting slightly downstream and move the fly upstream about 1ft at a time by pulling it. If you effectively covered the water on your way up, there shouldn't really much of a need to fish downstream as the water has been covered.

Now that I write this I realize another reason to fish upstream may be that, with all things being equal - e.g. fish can see you well no matter which directions - by moving upstream you can hit the same spot with more fly manipulations/techniques.

If you move down stream, you can hit the pool downstream with essentially one presentation: stop, let it drift or any variation with drag, it's difficult to achieve a drag free presentation this way without creating slack in your line; then as you move to the side of the spot, you can get a drag free drift but maybe not a great one; at this point it is no longer very effective to go downstream from the spot and try another presentation if the fish hasn't striked, and you missed a chance to get a good drag-free drift over that spot. But, by moving upstream, I think you can get the drag-free drift first, and apply all other techniques effectively from the side of the spot, and perhaps a little upstream from it. So, you have now applied one extra, perhaps the most effective, technique.