In 2005 he made the switch to the Finn class. In this phase of his sailing career, Postma is in search how to fully utilize his potential and is on the look for the right rhythm and suitable partners. This quest provides him with a strong foundation to enter the big competitions that are upcoming in these days. He qualified three times for the Olympic Games (2008, 2012 and 2016) and achieved good results during the Pre-Olympics: he won silver twice (2007 and 2015) and bronze once (2011). This makes Postma a favorite for the stage. However, Postma did not manage to gain a medal; in 2016 he lost his golden medal at the last buoy and eventually finished fourth. He also returns home without a medal at the other Olympic Games.
