In baseball and world football, the standard for overturning a call on the field is "clear and obvious error." If a replay takes minutes (not seconds) and multiple prolonged looks at replay vantage points, by definition, no error detected could be clear or obvious. I propose a 30 second time limit on replays. If the replay official has to go beyond that it cannot have been clear or obvious one way or the other and the call on the field should stand. Stick to what is clear and obvious and don't go to the point where the replay official is just guessing.