The formation of sets and runs, choosing when to draw from the draw or discard pile, and determining when to declare "Rummy" or "knock" are all skills that players must possess. With this information, plarummyholyyers are able to plan ahead, predict their opponents' movements, and modify their tactics as necessary. Anybody hoping to succeed at Rummy Gold must have a firm understanding of these fundamentals. Observing the Movement of Opponents. It is also crucial to keep an eye on the cards that your opponents are discarding, as this can reveal important details about their hand and aid in making tactical choices.