Sit-On-Top Kayaks come in a variety of shapes, sizes and designs. Sit-On-top kayaks have an open deck rather than an enclosed one. They are designed for the recreational paddler and are very easy to exit and enter. Paddlers with large body types, long legs, or limited flexibility may feel less confined paddling a sit-on-top. Sit-On-Top kayaks can range in length from 9 feet to over 15 feet, and some are designed for specialized uses such as fishing or surfing.