That's how I start to turn a pup on, but I make sure the hallway doesn't have any open doors so the pup can't take off with his prize. I give the pup 2-3 retrieves, then put the puppy bumper up. I do this twice a day. The pup is never allowed to play with the bumper, it learns that it's only purpose is for retrieving. Once we start doing this outside, I use a light check cord so I can reel in the pup when it tries to take off with the bumper.