Thats an interesting concept. It is very similar in construction to the Snake Flies that are used here for Sea Trout (Salmo Trutta Fario). They are tied on a braided loop with a hook snelled to the open end. If you made your own mounts you could incorporate the eyes in the loop to make them very secure. I'll try to get hold of some braid and tie one up to photograph. Here's an example.
Cheers,
A.