I don’t know much about tapered line. But there are plenty of talking points about furled lines in the collection of post at the below link.
http://www.tenkara-fisher.com/search/label/Line%20Making
Now we need to get this topic thread heading back toward the Favorite Kebari Room. 
The more I read your responses, see your kebari, the more I realize your skill.
Thank you.
Yes, you are wise.
It matters not what line, or rod, or fly or how many different ones you choose.
I have my favorites.
Maybe you have some too.
Enjoying your words very much.
Thank you.
Mr,Adam Trahan’s blog has been watching from long ago
It was very regrettable that received the hacking damage
It is happy for me to see you again on this blog
Thank you.
I have tied some ken-bane kebari and used them in the past - but I don’t know the reason for it
can you explain the reason for using ken-bane feather?
is it just for durability?
I was wondering the same thing.
kebari shape and vibration are important points of choice
Hard hackle will create a unique vibration
Vibration is that of proof that it is alive
Jumping on the water surface and vibration in the water come out
It stimulates the feeding behavior of fish
ken-bane kebari fising is like playing with a cat
Ken-bane kebari is rod operation is important
It will be fun fishing
It is similar to lure fishing
Please forgive poor English
The goodness of ken-bane kebari is forgotten even in Japan
I am grateful to the very good question
Ken-bane kebari should be a natural for the so-called Ashtapa-zuri technique.
Thank you dwalker
ken-bane kebari is when you use the flow will vibrate only raise the rod
Side by side fishing is more fun than towards the downstream
Thank you
That helps!
Now I can fish ken-bane kebari more properly
I think when trout are “looking” at a floating artificial fly closely they are really exploring for vibrations from a living fly. They need to get close to do this because the vibrations of a struggling fly do not travel deep in the water - only a few centimeters
anglers mistake this close examination for “looking” at color or size instead of the truth of the vibration
I love ken-bane kebari too. Here is mine with zenmai body
It’s a high technolgy fly, isn’t it ?
And the trout like this fly in the trout streams I fish on
Jean - Glad to see you have enticed in to making a post wit your artistic talents.
Maybe someday you can explain why native French speakers see shades of green / blue that native English speakers can not see. Makes me wonder if the way different species of fish think, if it also makes them perceive colors of lures differently.
A_Naples, are you sure sound only travels a short distance?
Having lived on a submarine for four years, even spent part of my first patrol standing sonar watchs, though my training was to split atoms, I’m pretty sure sound carries a long way in water. I’ve read that fish have good hearing. They can determine the direction of the source of sound, quite a feat when their ears are so close together, in a world where sound travels at 1,500 m/sec. vs in air at 300m/sec. From what I’ve read, fish chat, live in a very noisy world which can obscure sounds. but they have sensitive hearing, a combination of ears and lateral line. It is low frequencies that travel farthest. Maybe a clue to make low frequency sounds to attract fish. Though I think they are to energy / calorie budget conscious to travel far to grab a bite of food.
Stimulate the lateral line of the fish
Although there are a variety of approaches
There are wild silk moth Cocoon on the dubbing material as an interesting method
This is a clear dubbing material
Smell has also been said that to dubbing 
This is also a forgotten method in Japan
I do the same thing with certain plugs when fishing for striped bass. Interesting. I will have to try it.
Things to consider for maximizing or using this sort of vibration technique. This at least works with striped bass.
in stained water conditions, vibration can play a larger role than sight. The fish may even be keyed in more on vibration than sight so profile may take less of a role and signal a larger. Try different variations and tempos of vibration to find the right formula
one thing I learned recently that is counter intuitive. The more camouflaged the artificial is in clear water the more likely a fish will take the offering with abandon.
We often make offerings to get the fish’s attention. Hot spots, bright colors…uv…and sparkly do-dads. This stuff gets their attention but screams artificial. Often striped bass will follow an offering but turn away. I read a recent article on clear plastic plugs and how fish strike them harder than opaque plugs during condtions where the fish are feeding but not aggressively. The idea is that the fish senses the vibration of the plug and its displacement in the water, but because its hard to see sort of like how a baitfish is camouflaged…they cannot inspect it much so they end up crushing it more aggressively.
I suspect the same can be done with trout. Try disguise instead of visibility when employing Ashtapa-zuri .
@Gressak You are absolutely correct on this regarding trout (I don’t know about other fish though but guess it may be true). Numerous people have done both formal scientific and informal anecdotal studies on this and found it to be very true indeed. However, as @dwalker pointed out, the more “noise” (sound, physical, or visual) the greater the signals need to be to get the attention of a trout. That’s why often the “noisier” the environment the more attention and artificial fly/kebari needs to make. Whether that is through color, size, or physical vibration; they all play a role. The inverse is true the less “noisy” (or calm) the situation is.
I think your second point also clearly correlates to this regarding the inverse that I referred to. Everyone from the gents at Discover Tenkara to quite a few authors of Western fly fishing methods have written about this.
This is where proximity comes into play. In stained, fast moving, or noisy water. Presentation to suspected lies. I suspect that the “noise” signature of vibrating hackle is far different than other vibrations and noise in the river environment. I have no idea how sensitive the lateral line is on fish. Perhaps they are like the princess and the pea…they can pick out anything out of place.
Interesting points. Natural prey generally uses various strategies to avoid becoming lunch. Camouflage being among them. A bit of a hot spot to create noticeable contrast to attract attention if over done, may cause the fish to think, wait a minute there’s something fishy going on here. Who hasn’t dragged a fly through the water, watched fish chase it but not take it.
Back in the spring I purchased two books about fish behavior. After just skimming through them I’ve finally settled down to carefully read one of them. Daniel Bagur’s "Where the Fish Are - an angler’s guide to fish behavior. " . In one section he points out that metal lures retain there colors longer than lures made of soft material that will become duller looking with use. Leading me to wonder do flies loose their effectiveness if they are durable and fished for long periods? Should you change your fly to a new clean one of the same pattern and color after a time? They will become dirty even in clear water, faster in tea colored water or muddy water. DB also points out that fish, both predators and prey fish, can change colors, and they are also vocal.
otoh, looking at the TUSA forum I found a video posted by Karl Klavon. The video tries to make the case that dark colored lures are more visible to fish in tea colored water that brighter colored lures. Perhaps contradictory or counter intuitive. I’ve not yet decided if his video was convincing. I can only take limited bites about such things, before deciding it’s just better to go fish. Sometimes you can learn stuff from others, but too much of a good thing stifles your own analysis and creative insights. Here’s the video in question.
Still it seems to me the color, contrast, shape, size or vibrations of a fly may grab a fishes’ attention from a distance, but may be it’s pattern of movement has more to do with whether the fish takes the fly.
Dr Ishigaki has pointed out in his presentation that in fast moving water as is common on Japanese streams. Fish only have a very brief time to notice the fly and make a decision whether to take it or not. Japanese kebari have developed to exploit that situation.
otoh, he went on to say, transport a fish from Japan to a slower water stream in the west, and they will take their time inspecting the appearance of the fly before deciding whether to take it or not. Just as the fish native to the slower water streams. And western fly patterns had been developed to exploit the fact that in slower water fish are more suspicious, more judgmental of the appearance of the fly, they have more time to decide take or take not.
In contrast to Dr Ishigaki’s view that fish have poor eye sight only seeing a blurry image. Daniel Bagur writes that up close fish have pretty good eye sight. The only thing certain is our scaly friends with pea sized brains are right successful out smarting our much larger brains. 
Maybe they often just give us too much to think about, complicating things.
