Vampyr, on 2017-July-29, 04:54, said:
I don't think it is a good idea to rule this way, because it is encouraging people to play things they can't remember. This often damages the opponents, as the explanations are deemed to be correct even when the players have never actually got the method right.
"Convention disruption"?
Barmar's right. Ruling that a pair have an agreement that they don't have, because they've forgotten their methods, is not right.
The ACBL General Conditions of Contest includes "A partnership is responsible for knowing its methods." Okay, but it specifies no rectification or penalty, so the director is left to his own discretion. IMO a pair trying to learn a new method should be cut some slack, particularly in a club game. Eventually, though, if they continue to have problems, I would suggest to them that they consider dropping it from the card, and warn them if they can't get it right in future, they will receive PPs. And then I would give those PPs.