OK Finally got it! I was making about 3-4 mistakes at once that you couldn’t have legislated for! Little things like not turning on hair dynamics, having the ‘Keep shape’ box checked. Doh! Have finally got it so villi bend nicely in a breeze. It was hard at first to stop them flattening. I’ve found that using just 2-3 segments on the hair, adjusting falloff, and putting the wind flow up to 10 seems to minimise this. Thanks for all your answers.