It's hard to believe that the stimulator dry fly could be improved, but it was by adding enticing rubber legs and a very realistic wing. This dry fly works well at imitating adult golden stoneflies, grasshoppers, and in smaller sizes, works well as an adult caddis fly.
Used the "chew toy" stimulator on a very finicky spring creek in August in West Virginia - lots of looks, and probably 8 hits with 4 fish landed. This place is tough anytime, particularly in low clear water - a new favorite!!!