Walk to Frazer Peaks. You can choose to summit one or both peaks - Magog and Gog. We went to Magog and it was stunning. Incredible views over the island, including Gog, Seal Creek (Cooks Arm) and the islands off the southwest coast. The track is easy to lose so pay close attention. In the open areas piles of stones mark the route and once you go down into the flats orange/pink tape is used. If you lose the track follow the ridge at first then head towards the Scotsman (unusual rock formation near Magog).
Twenty years from now you will be more disappointed by the things you didn't do than by the ones you did do. So throw off the bowlines. Sail away from the safe harbor. Catch the trade winds in your sails.