[shropshire_blue]

mine will be definatley permanent i have concreted posts at 2m intervals and will now concrete the floor, between the posts i will use 6"x2" rails to make the sides. included in the race will be a turnover crate, a foot bath and a shelf all the way along to keep medicines and sprays whilst treating the sheep. i will make a forcing pen at one end with a guillotine gate, a drafting gate in the middle and at the end a small pen for shearing and dagging! will be cracking on with it this weekend if the weather stays nice 

That sounds pretty awesome! Pictures please when you're done!