Here's a great pattern I've been tying up this week restocking the bass box. Its a fairly large jig intended for large mouth bass. I'm sure it would be a great small mouth fly if you down sized it some and if you went with a size 6 and changed up the colors the carp should take a liking to it also. This fly happens to be purple and black, but black/blue, rust/black, tan/rust, and other buggy colors work just as good.
I start off with a size 4/0 Mustad 60 degree jig hook. This is a medium wire hook, it is very sharp and plenty strong. Tie in some marabou, I'm using 2 plumes since this is a fairly large fly. I like to tie the marabou down the length of the hook shank to build some body to the fly.
Next tie in just a little bit of flash.
Then take a contrasting color of ostrich herl and
mix in with the marabou. Its kinda hard to see
in the picture, sorry.
Tie in some estaz chenille along with 2 contrasting colors of large schlappen. Great colors are black/purple, black/blue, and so on. Bears Den is a great Fly Shop by the way!
After you tie in the schlappen and estaz, tie in the eyes. these are the 1/4" I-Balz. The wrap the estaz chenille up the hook shank and figure 8 around the eyes.
Take the schlappen and fold them on top of each other and
wrap up the hook shank to the eyes.
Tie off right in front of the eyes.
In front of the eyes tie in some more ostrich herl. You'll want some on the top and bottom of the fly. They just need to be the length of the hook shank to slightly past the bend of the hook.
Here's a great tip I learned from
Rob Woodruff who is an Orvis Endorsed Guide on Lake Fork. When making a leader for bass fishing. Take about 3' of chartreuse mono like Suffix Elite as your butt section. Then add your 4-5' of flourocarbon to complete the leader. This colored butt section on the leader acts as a strike indicator. Bass can either slam a fly or just ease up to it and suck it in. When using a fly like this jig that your going to be working fairly slowly, LMB are most likely just going to come up and suck this fly in. You won't know if a fish has taken your fly till it starts swimming off. Watch that colored mono for any movement to detect a fish has your fly. I fished with Rob several years ago and learned alot about LMB and techniques to catch them. He defiantly comes highly recommended on my list of guides to fish with and if you ever have the chance to take a trip with him on legendary Lake Fork don't pass it up.