I'm not convinced that split shot spook fish, but I am convinced that bouncing a small shiny silver split shot close to trout doesn't help your hook-up ratio. These Stix-N-Stonez weights are non-toxic, have a dull earth tone finish, and can provide that extra confidence boost for the fly fisherman, and sometimes a little confidence in your presentaion is all you need.
You can check out the entire Boss Tin product line here.