Actually I'm not sure that the term "Rhody" is accurate but since I see Ray B as being one of the real advocates of using the hackles tied flat, why not!
These are real easy to tie, will be a cinch to cast and should be fairly active in the water due to the position of the top wing... We'll see soon enough.
1/0 short-shank hook
Tie a modest bunch of bucktail about 1/3 back from the eye, three loose wraps and then use your thumb to roll the pieces around to the sides of the shank evenly.
Tie another bunch on the bottom of the shank just ahead of the last. About 1/2 the length of the first.
If you think it's needed add another small bunch right behind the eye. Keep it short.
Add about 25-30 strands of angel hair (long brite) to the top of the shank behind the eye. Taper the hank by staggering the ends. Tie at the midpoint of the flash, the fold the other end back over the first, thumb roll to spread over the bucktail a bit.
Clean up the head to create a nice seat for the hackle.
Add a straight hackle to match the length of your body. Get a nice flat lay on top, three wraps on the stem (not too tight) then grasp the shaft of the stem in one hand and the tip of the feather in the other and gently pull the feather up into the wraps to help 'seat' the feather. BTW it looks nice if your feather has a bit of hose webby base fibers right near the head. The fly with the olive wing was just right.
Make sure the feather stays put, whip finsh the head and cement.
Optional; add a pinch of red bucktail cut square for a throat/gill.
Optional; add a grizzly hackle under the top wing