This is a weight rig that I have been playing with for swinging flies. The use of small worm weights for fishing streamers and swinging flies may be relatively new but this rig is certainly not novel. However, I strung a rubber band through the weight as a peg. Using the rubber band allows me to move the weight up and down the leader without damaging it and the rubber band will hold the weight in place.
Here, in the Midwest, we come across some narrow, relatively short runs and the "fishable window" (for lack of a better term) can often be quite small. Incorporating worm weights with long leaders and floating or intermediate tips can allow you to get your fly into that fishable zone quickly and get it out without hanging up.
Also, the weight is in front of a modified prom dress with a hackle collar. It hasn't caught a fish yet but it looks great in the water. It is intended for dropbacks in high water but it could be a good deep winter fly.