Next is an important feature in a fast paced game. Everything hinges upon Next. If you like the game, then Next is important to you.
When a dog loves to play disc Next, the next trick, opportunity, or movement, is a great motivator. Next can be a Cookie.
Next can be offered consequently, as positive reinforcement for good behavior, and it can withheld as negative punishment for bad behavior.
There are many cookies in the game of disc dog freestyle, but Next is the cookie.