Kangdanlin.
No, I don't feel like it has to end with the decoy always dying. This is more in the beginning, or when the dog needs a boost of confidence. I do end often with the decoy running off. Like if I think the dog needs more frustration to help with his desire/drive. In scenario and or control work, the decoy may stay on his feet. just like dogs who had the sleeve slipped to them in early work don't always have the sleeve slipped to them. As the work advances, sometimes they have to out, sleeve intact.