Andy Baird of Small Fly Funk, commented on our Extended Body Light Cahill, suggesting that we might add hackle to give the impression of legs on the fly. With just about any dry fly, the addition of hackle is always an option, so feel free to add it and anything else that suits your tying/fishing style.
I've never felt the snowshoe rabbit foot winged flies needed hackle, as they float just fine, and many of the outer wing fibers tend to be drawn down to the water. This provides a hint of legs, or footprint. Here's a photo took today after dropping one of these flies onto a glass of water showing the footprint the wing creates. It's not the best photo, but you get the idea.
That's a keeper! Be sure to check and sharpen those hooks.