
you are so lucky with a collie,cos they are so interseted & want to do it.
personally i "teach" the exercise with a sweetie (bit of yummy sausage or cheese) then when its learnt i generally reward with a toy.
i have a special toy that is rward for training only.
however usually they dont need much incentive just want to please.
the thing with BCs is,as quickly as they will learn good things....they will also learn bad!
(btw if you are feeling nosey click on my name to see my doggies)