I purchased two Viper 10.4 kayaks during a black Friday sale. The kayak tracks well and has a 300 lb. capacity which makes it ideal for multi-day paddling depending on your weight. I have only used the kayak on lakes but would like to try on moving water. For the price, the kayaks were a great buy since we are beginner paddlers. It is a great way to test your skills as a paddler. Both readily fit on the roof of a Jeep Patriot once we installed crossbars and racks. I recommend these kayaks to beginner paddlers and people who just want to get on the water.