With the introduction of the Rhino-Rack Nautic Stack it is time to convince your friends to take up kayaking. The vertical design means up to 4 kayaks fit on a single vehicle's roof. Take one car loaded with all your friends' kayaks to the top of the river, white water course or stream and park another vehicle at the bottom so you can easily shuttle back to the top. The Nautic Stack has two fixing styles included in the kit - a universal clamp style and c-channel nut and bolt. Let the water sports adventure begin!