IOBO Humpy. Do not be fooled by the simple appearance of this pattern - it is a truly wicked emerger.
IOBO Humpy
Hook: Tiemco 102Y #13-17
Thread: Benecchi 12/0, grey
Body/shellback/wing: CDC feather, natural (Type 4)
Video here - please view in HD, if able:
http://www.youtube.com/watch?v=jbUCtVGY6Ok
Cheers,
Hans W
That is one easy looking, eatin’ fly. I am going to make one or ten of them tonight…
And complete LOL on the odd numbered hook sizes!!
chuckle
I like the Tiemco 102Y as a general dry fly hook - and accept that they happen to be available only in odd numbered sizes in good humor 
Cheers,
Hans W
Hans, why would you use those silly hooks?? LOL, LOL
Does accepting that they are in odd sizes mean you would prefer even sizes?? LOL, LOL
Accepting that these are odd numbered hooks means that I do not care whether a range is all even numbered, or all odd numbered
Cheers,
Hans W
Me? I buy 'em cause they’re cheap. No one wants 'em. I get them for about $2.25 per 25, when they go on clearance
Hans,
In all seriousness now, do you ever tie a two tone color? For example, for a PMD hatch, might you use a yellowish body and a light dun color back and “wing”?
Thanks
Quick, ugly first attempt to show what I mean.
Byron
Now that thar’s another good idear!!
IOBO FWTF = I Ought to Be Out Fishing With This Fly.
C = Chuckling
Cheers,
Hans W
Hans is too modest to tell the story of the IOBO, since ho played a prominent part in it’s origin. Jack Tucker created and named the It Oughta Be Outlawed Humpy.
Jack created the pattern after seeing Han’s CDC & Elk on the FF@ Dry Fly Swap Page. See Section I.
As the story goes, Jack was trying to copy Han’s CDC and Elk, but incorrectly tied what turned out to be the IOBO Humpy. Serendipity strikes again. The naming of the IOBO includes Sue K, who organized the first FF@ pattern swap.
Hans,
Have you tied it in a two tone as I tried to show above?
Nope - basic pattern as shown
Tied 6 of these last night in a near heartbeat. I was using self-harvested CDC which made a more sparse body, so a few of them have two feathers.
I have some snow goose CDC for tryiing tonight…white fly this time for some contrast.
Excellent
To put this pattern in context - the IOBO Humpy is a very effective niche pattern - it is great at doing what it is designed to do, which is fooling tricky fish feeding on emergers. It is also a very easy, very quick to tie pattern.
It is not a great general purpose pattern. It is not that durable. When slimed up and soaked, it will no longer float and needs to be replaced. By then, however, it has generally done its job 
Cheers,
Hans W
If this is “highjacking” the thread, just let me know and I will delete this post. But, it addresses a firm belief of mine. That is: When the fish are feeding, but ignoring all offerings, if I have something they will take, but only good for one fish…that’s fine with me. Can’t tell you how many folks I have seen casting over and over (and changing flies over and over) to feeding fish on the Henry’s Fork Ranch to no avail and then finally walk off. If you have a fly that is only good for one fish when other flies aren’t working, that’s fine with me. I want that picky fish. Flies can be changed quickly.
See above, Byron. The strength of the IOBO Humpy is to seduce the tricky fish, especially those feeding on emergers. The situation you describe is one such scenario.
Cheers,
Hans W
Yes, Hans, that is why I posted. I saw that mentioned and it sure fits my fishing style.
Any chance of meeting you on the Henry’s Fork in mid June through mid July??? You can visit with Rene. Sure he would take you fishing as well. He is a fine fisherman out there on Wood Road 16.
Just got up some fresh CDO (cul d’oie) today (white-fronted goose, a.k.a. Specklebelly), and made sure to separate the bigger feathers…specifically for this fly…