All Carbonology Sport skis are available in a downriver construction. The Feather SOT conforms to CSA Kt regulations for river races. This K1 Sit on Top is designed for downriver races. Water is dispersed by the splash-lip and drained by two flexible and independent venturies. The fact that you do not need a splash cover/spray deck speeds up your portages drastically and with the ability to just jump back in if you have an unfortunate swim as the boat cannot fil! with water really makes this an exciting product. An empty boat is also a safer boat with very little risk of it getting wrapped around river obstacles.