Defenders can act as a team to restrict a centre of the field vertical offence. The goal of team defence is to trap a vertical stack on one sideline or the other by forcing throws forward, aggressively preventing upline resets and taking away the huck option with a last back. The scenario is quite easy to setup from a dead disc but can take a team several practices or games before being able to execute during normal flow or game play. Most players will agree it is much easier to defend against an offence from a dead disc than it is to defend a team that is moving the disc well. To that end, it is quite easy to beat handler defenders up-line during normal flow, which results in well timed hucks to cutters with separation. So, at best you may trap a team successfully 10 times per game and force 3 or 4 turnovers. At some point, however, the offence will work the disc to within a few yards of their scoring end zone.