No offense Nick, but in regards to the physical dynamics of why one would use jungle cock or not...... I would recommend your sticking to arguing areas that you know....... Every other person that has commented on this post have had useful and helpful things to say, and are obviously from folks that are experienced fly tiers. Your comments have simply shown your lack of tying experience. Tying involves much more thought than simply pretty materials and dumbbell eyes or a conehead. I don't doubt that you tie, and you obviously love it. But if you don't understand the physics behind why one would need to use specific eyes on specific fly bodies (which is evident based on your IG posts), don't comment, as it is leading a fisherman in the wrong direction. You cannot and do not tie flatwings, which is why you should not comment on this post. You do not understand the dynamics of why one would use one set of eyes over another for this specific style of fly.