Flat bottom boats are great for fishing. They are generally designed for slow speeds and calm water.
Round bottom boats, such as canoes, move smoothly through the water with little effort. Boaters must be cautious when loading, entering and exiting a round bottom boat. Due to the hull design, these boats roll very easily.
The Deep-V hull is the most common hull type for powerboats. These boats move through rough water at higher speeds and give a smoother ride than flat bottom or round bottom boats. They also require larger engines than flat bottom or round bottom boats.
Multi-hull boats are the most stable of the hull types. These boats require plenty of room to steer and turn. Catamarans and pontoon boats use the multi-hull design.