What type of planing hull handles rough water the best?

A deep V hull is designed with a pronounced V shape at the bottom, which allows it to cut through waves more effectively than other hull types. This shape helps to reduce the impact of waves and provides a smoother ride when navigating rough water. When encountering choppy conditions, the deep V hull can slice through the water, minimizing the amount of hull that is lifted out of the water and thus providing better stability and handling.

In contrast, a flat bottom hull tends to be more stable on calm waters but can struggle in rough conditions, as it does not have the ability to cut through waves. A shallow V hull offers some advantages over a flat bottom hull but may not provide the same level of performance in rough waters as a deep V hull. The parallel hull, while effective for certain applications, does not offer the requisite design features that enhance performance in turbulent conditions. The deep V design's effectiveness in managing rough water makes it the superior choice among these options.