My ideal improvement to any fly is to produce ties that catch as many or more fish that take considerably less time to tie, because I prefer to fish than tie flies.
This tie believe it or not started with me tinkering a bit with the traditional woolly bugger (which for me was a highly successful early season and searching fly) after a couple of iterations that looked a bit froggy I landed at the Improved Frog. I haven't tied a wooly bugger for eight to ten years at a guess and this fly is its equal or better which is a bold statement and it takes only a few minutes to tie. Think Mudeye, Frog, Tadpole, Smelt etc... these flies command the fishes attention.
It can be tied with or without a bead in various sizes and my most successful colour would be black followed by olive but it would probably work in any colour. I like a little bit of sparkle in the chenille but sometimes just drab is better, another variation is to tie a puff of red yarn under the tail (like a frogs bum).
Does it work? - I have caught countless fish on this tie as well as my largest Australian caught fish and it is red hot early season on the central Plateau in Tasmania. Give it a try, you will not be disappointed in the results and tie it on anywhere you would consider a woolly bugger or mudeye pattern (and its easier to tie).