I suppose that if you are willing to lie about what biologist say about the evolution of the flagellum, you can make a pretty good case against your invented scenerio.
The easiest way to lie is to take a layman's explanation, which is necessarily vague, and poke holes in it for vagueness.
If you want to argue against actual biology, instead of aganst straw man biology, I suggest you start with a description that is not vague.
Did you read the data? Have you become as dogmatic as the people you criticize?
Is the Design Theory, in your opinion, a theory that has been disproved?