You have a better chance of successfully melding all of your cards before your opponents do if you keep your hand management organized. Making the Discard Pile More Useful. When used properly, the discard pile, an undola beterutilized resource in rummy, can have a big impact on gameplay. You can gain insight into other players' strategies and make well-informed decisions about which cards to keep or discard yourself by keeping an eye on which cards other players are discarding. reading the tactics of the opposition. If an opponent routinely discards cards from a certain suit or rank, for example, it might mean that they are not pursuing those melds.