You can learn about your opponents' tactics and modify your own by paying close attention to the discard pile. For example, it might be a sign that an opponent is working on a run involving those cards slots in vueif they discard a 7 of diamonds after collecting a 6 and an 8 of diamonds. Another effective strategy is to deliberately discard your own cards. Consider holding onto your card longer or discarding less important cards if you think your opponents might need it, like a card that completes their possible meld. This keeps your opponents guessing about your intentions in addition to protecting your hand.