Disclaimer-Jokers should be used carefully, though, as keeping them for too long can make it impossible to combine other useful combinations. Also, it's critical to observe how your opponents use theirpin up slots wild cards or jokers. An opponent may be almost finished with their hand if you see that they have drawn a joker or are using one in their melds. Using this information, you can decide which cards to keep or throw away. Also, rather than focusing all of your jokers in one area, think about how to best divide their use among several melds if you have more than one in your hand.