OOPS have to disagree with you about the tails Texas - last year I decided to leave tails on - as we have only a few sheep they can easily be shorn and kept clean.
A few farmers over here have also decided to leave tails on - it used to be thought we had to dock but now we realise this is not so - the sheep keep their butts clean by wagging the tails across it and also a healthy sheep has firm pellets for dung so there should be no mess.
So far we've had no problems at all
and I would far rather not dock ANY animal - it is awful enough having to castrate the males.
Having said that I hear what you say about fly strike and would MUCH rather see sheep docked than get flystruck!
If you are going to dock do it asap and to be honest it is the banding that really put me off docking - cutting the tails or doing the hot iron which sounds horrendous but is, IMHO a much kinder method (Being instantaneous)