I have over the years become a big fan of rubber legs of my flies. Rubber legs adds motion and dynamics. In flies that mostly are made of marabou, I think Rubber legs stand out a little extra
Here is a pattern on a damselnymph that i like
Hook: Kamasan B175 size10
Gold Head: brass or tungsten. 3,2mm
Tail: Olive marabou and four dark green or black rubber legs
Body: Olive dubbing and two or four rubber legs
Hackle: Olive rooster hackle.
If you want to, you can tie knee joints on the rubber legs