I don't know why...I do the same things each time.
But I'd guess 1 out of every 4 catskill-type flies I tie won't cock properly when dropped in a bowl of water. Will lean to one side or the other.
I know trout will likely take them as cripples, but it bugs the hell out of me.
Doesn't really matter the wing-type (hackle tip, wood duck, duck quill slip) and I splay the tail as wide as possible (hence, I recognize it's not a true catskill - not to mention I don't tye size 12s very often).
Thoughts?