A group of us were tying Copper Johns when I commented that years ago I would "prefab." several pairs of biots and cement them together to get nice precise separation, and later easily attach them to the hook as a single unit. I'd be attaching them on top of the hook instead along the sides. Wow! what a bunch of raised eyebrows I got. Was I tying hybrid flies, committing heresy or what?
My prefab. deal works well for Prince nymphs also. What say you?