Game stacks call for a DFSer to take a game they expect to shoot out, and to load up on an illogical number of players from this game (this should be a game that has potential to go absolutely nuts — turning into one of the highest-scoring games on the slate).
The cons of game stacking should be obvious: if you stack a game heavily and it fails to go nuts, that roster will likely lose. Without the game going nuts, you’ll capture a few good scores from the players you rostered, but you will also capture a . . .