It caused the AFL to review the laws and award a free kick for deliberate rushed behinds. Flooding exploits the freedom of movement of players around the ground. It involves the coach releasing players in the forward line from their set positions and directing them to the opposition forward area, congesting the area and making it more difficult for the opposition to score. It is commonly deployed to protect a lead, or prevent a rout. This is possible due to the lack of an offside rule or similar restrictions on players field movements. In 2000, it was infamously employed by the Western Bulldogs to end Essendon's 20-game winning streak. The rolling zone or cluster, pioneered by Hawthorn coach Alastair Clarkson executes the zone defence, but across the entire field. Such a tactic requires extreme fitness and co-ordination of the entire team. Teams can break the rolling zone by playing direct football, or kicking long to a contest. Before the 1980s, teams would often simply kick high to a full forward whose role was to kick goals. Allan Jeans used Jason Dunstall as a lead up full forward and established a new breed of lead up full forward who would lead up the ground in a straight line, providing midfielders with a large, fast and strong running target to kick to. This made it very difficult for opposition sides and lead up full forwards would provide game winning firepower. Such players included Tony Lockett, Gary Ablett and Tony Modra. In response to the lead up full forward, opposition teams will often double team a full forward and stand "in the hole" (often tall ruckmen) to prevent them from leading into open space. In response, coaches began recruiting specialist decoy forward or secondary target who were able to run in a different direction to the primary target and were accurate at set shots. More recently, flooding and other defensive tactics have denied opportunities for using both the primary and secondary target tactics. North Melbourne coach Denis Pagan pioneered a technique called Pagan's Paddock, which involves ordering all attacking players to clear the attacking 50 metres of players and bombing the ball into the open space. This would give key forwards (in his case specifically Wayne Carey) room to run into, often running with the flight of the ball toward goal. In recent times, a similar tactic for the Sydney Swans' Lance Franklin has been described as Buddy's box. Rotating forwards is a tactic where coaches move and change forward players to exploit different match ups create space to lead diagonally when the ball is inside the 50 metre arc.