This is a difficult question to answer without knowing the person's weight, height, and experience paddling. Generally speaking, a boat that can hold up to six people should be manageable by one person. If the person is taller or heavier than average, they may need to take a few more strokes to get the boat moving. Additionally, if the person is inexperienced or not used to paddling in open water, they may find themselves in danger if they are not careful.