Buddy,
I guess this is why it matters, at least to me:
If you don't know what the trout are taking and the stage of insect they are taking, you don't know what artificial to present. And, you don't know what type of presentation to use. Sometimes you only get one chance to have that trout take your presentation. So, it gives you an advantage if you know just what to present and just how to present it.
A lot of trout will disappear if you are floating a number of "guesses" at him..............
Just my opinion though.
Here's my version of a similar fly in the paraloop style:
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