[Storm]

Make sure you get a positive response, short and sweet, and finish with the dog still "enthusiastic" being motivational. If the dog tires and decides this is bull........................ with no further inclination, this is a problem and will adopt an attitude of, I have had enough, sooooooo keep the dog in "drive", cause if he "gives-up" then you start to bring in pressure, however slight, even unknowingly. The situation becomes a little uncomfortable as a result, the dog starts forming a not so nice association and before you know it the dog dislikes the whole exercise. Then you really have to tighten the screws to not only get the dog through the exrcise but to lift his spirit aswell. Not easy if you don't know what you're doing. ;)