the F-Fly

is one of those general imitations very apt at imitating either a mayfly, a sedge or a midge. originally designed for grayling, it will do and do equally well for just about any species of fish that eats insects. it’s very simple design and construction are what makes it work and it’s a great fly to start off in fly tying.
as with most flies, this is one to have in different sizes and colors to suit the moment. there is nevertheless one inconvenience to the cdc feathers and that’s residual fish slime after a catch. it annihilates all the flotation qualities of these feathers, making them sink immediately and to continue fishing means either changing flies while the first dries off completely or thoroughly washing it in the water and then drying it off with something like amadou or my favorite, a piece of chamois skin before fishing again.
finally, what this means is it’s best to tie each model in good numbers to be able to deal with slime and continue catching fish. they’re easy to tie and inexpensive so it isn’t a big deal.

first, let’s have a look at the original F-Fly, scrupulously tied as per directed by it’s creator in this lovely Parkinsonized video by Oliver Edwards.
EDIT– sorry folks, the video was deleted which is a shame as i wanted to show how the fly was originally tied by Fratnik and not one of the myriad hand-me-down versions that have popped up since.
unfortunately not a video but this sbs gives us a really good idea of Frantik’s concept. note how the body/abdomen didn’t have any dubbing and was a simple thread base wound twice for just a little bit of volume.
a turn or two of thread behind the wing keeps it slightly detached from the body which tilts the abdomen below the surface as described by Hans at the end of his video. (see below)

and now, the improved version tied by Hans Weilenmann.
sure enough, we can trust Hans to come up with a way to improve something that’s already quite perfect.

note: for the longest time i thought that this fly was named after me (Fauvet) but a little research shows that the ‘F’ is in fact there for it’s Slovenian creator’s name, Marjan Fratnik.
yet another example that while vanity, ignorance and wishful thinking may make for a seemingly pleasant life, it’s just plain dumb.