Nick kept up with a strategy of sitting around, and maintaining maximum relaxation while participating in Survivor2. Unlike the completely lazy people that are featured in other seasons, he did do stuff around the camp. Most of the stuff he did was geared toward relaxation though. While other people fished, he built a swing. I think he was saving his energy for later in the game but he didn’t make it to later in the game.
He could have done more and maybe he would have if it weren’t for Michael’s unfortunate accident that changed the direction of the show.