I used to think KO King and hippo were the same person. Two people with a hippo problem?
Anyway, why are you designing a play? I could give you some of my free flowing plays, but then I'd be like Fonzy in the WaterBoy and you'd be that fat grey coach that steals the book. I don't want that.
But if you are coaching a team, the best plays you can use (at any level) are "Motion" and it's man yvariations, or my personal fav: "Princeton" which I have about 10 modified versions.
We set up slightly different depending on the opposition.