I am a big fan of para flies, and I tie my own to the best of my ability, they catch me fish, but aren't as pretty as a lot of others on here.
My question/discussion here is, why is it always thought to be best to tie the hackle with the concave side of the feather upwards?
I appreciate, that done this way, it causes a natural flow of air as the fly decends, and hopefully places the fly in an upright position on the water.
Well I often find para's tied this way, lie on their side.
Today I tried a test, I have some nicely tied pink post para's, tied by a professional, all on size #16 Kamasan B400's.
Now these flies all had the hackle in the opposite direction, i.e with the concave in the down position, and for the life of me, I couldn't get them to fall over, or lie incorrectly, every cast the fly came down perfectly, and sat like a little boat on the river.
Also, surely the footprint created by the hackle, must be better with the hackle points in this direction, causing a definite pattern on the water.
It was quite a revelation actually, and I have tied some more this afternoon to try and convince myself I am correct in my assumption.
I wait to be shot down in flames.

S.