Sailing mini-games can be started while traveling between islands in exchange for one unit energy. You can bypass them for no energy by using the airship. The sailing mini-game will give you the chance to win rare items such as tree removers or dynamite. You can refresh sailing mini-games without spending pearls by checking every available island. The games and difficulty level will change between each one. If no islands have what you need, travel to an island by airship, then exit back to your boat. After entering the sailing map, all the mini-games will change, allowing you to check each island again for what you are looking for. In the sailing challenges, your current lane will be highlighted with lighter-colored streak that displays the entire length ahead of you. You will be able to tell if obstacles are in your current lane if they are in the highlighted area. This is very useful when the lane curves. You do not have to wait until you have moved over to an adjacent lane before moving back. If you accidentally swiped in the wrong direction, immediately swipe in the opposite direction. Your boat will return to its original lane without consequences. The red bar in the upper right corner indicates your current speed. When full, you are at maximum speed.