well a human orientated mill would be fine,just get her indoors to walk them for half an hour to empty out.its vital they empty before you mill them,but try not to use the mill only,as much road work as possible and as little mill work as necessary.i used the variable speed mills,give em a good walk speed first and then 15 minutes of a fast canter then a slow walk for another 15 minutes,its been a while since i had one but they are handy tools. A BODY GUARD THANK GOD I DIDNT CALL YE A LAZY BAST**D THEN how much do you charge an hour,i forgot it was my anniversary last week,could do with you