Can't have it both ways, Sitka. A turned eye causes a nymph to ride hook up, but it helps a dry to ride hook down? I think the effect of both is minimal if it's there at all. But a turned eye DOES change the angle of pull from the line. Instead of pulling straight down the hook shank, you are applying a small bit of leverage.
But it's all pretty picky. Fish don't care. They can reject anything I throw.
Let's lay it out so we both understand what we are saying...
Dry flies are tied on lighter hooks and the up eye dominates. If the eye weighs more than the whole hook bend it could offset things, but the final drift to the surface should be curve down, eye up.
Nymphs tend to be tied on down eye, heavy hooks. The direction of pull on the eye puts the shank down, point up.
Now, I need to go to the posts and see what I actually said!
