[sheeponthebrain]

appologies for outdated advice.  just passing on what an old experienced friend told me 18 year ago when i was having the same issues with floss my young pup at the time.  she went on to run sheep with me pretty much everyday for the next 12 year.  the exact advice was. 'u should never have to shout at a collie  for doing wrong they should know by your body language. and you should always gave the dog with you. (we've all seem plenty farm collies that have gripped sheep then the farmer shuts them away to never get a chance again. )   however i admit this may be outdated advice as he would now be in his ninetys if alive