How many folks are familiar with the Keel hook and use flies tied on Keel hooks. They are still a major item in my fly box, for both fresh and salt water. Unfortunately, Mustad stopped manufacturing Keel hooks and most "keel" flies today are a variation on the original Mustad Keel hook. The fly below is an example of the non-Mustad variation of the Keel hook. I'll have to take a photo of th original Keel hook and post it here. I see on the web that tyers are looking to buy any Keel hooks they can find.

The major attribute of the hook design is to cause the fly to ride in the water with the hook up rather than down. This makes it perfect for snag-filled waters, or slow retrieving a bonefish fly across a grassy bottom.