It also entails monitoring the cards that your opponents have discarded so you can predict which cards you might be able to take up from the discard pile. Also, plcash slots real moneyayers need to be aware of when to declare the game "Rummy" & stop playing, as well as when to hold onto & discard particular cards. Taking Notice of and Adjusting to Opponents. In order to create a winning rummy strategy, players must also pay attention to what their opponents are doing and adjust their tactics accordingly.