Instruction: Analyze a question and its supporting document. Predicting answerability based on the information provided in the document. Output yes if the document contains relevant information to answer the question, otherwise output no.

Input:
Question: how does it work in a river were it can drag on rocks at times
Document: I like it but I must be careful  not to drag it on rocks or shells. It is, after all, vynal. Also, water gets into the cockpit from the oars...otherwise, it's fun, inexpensive and easy to carry.
Great price for a neat small inflatable kayak. It does not work well without the fin on the bottom-you will just spin in circles. The fin gets in the way if you are in shallow water, or a stream that has downed trees or rocks. I had to turn around on a stream because I could not get past a tree that was about 5&#34; under the waterline. This would be better on lakes and ponds. It is comfortable. I dislike the paddle.
This is 65$ dollar kayak is decent for its cost. I have used this kayak 3 times and seems to work fine.
Awesome. Took it down multiple Class 1 rivers and various lakes with no issues. Barely a scratch despite sitting in it while running over river rocks. Friends bought one too and are equally pleased with performance. Decent tracking. One friend was sent a kayak with a hole in the seal of one of the Boston Valves. Amazon replaced it quickly. Very happy with performance and price point. Easy to learn with. Very mobile. Highly recommended.
I've had it out twice so far...maiden voyage on a small lake and the second time on the St. Joe River in South Bend, IN. Both times out there was a fair amount of wind but it was no problem. The supplied pump is high volume. It takes no more than 10 minutes to air it up. The supplied inflation gauge is easy to read.
This is good kayak for the price.Toke it for a test and everything work fine.Space saver.
The Kayak feels like it rocks in flat water. It turns over easily. I have been kayaking for years but this one turns over almost any time you move in your seat.
I like this Kayak from multiple perspectives. For novices, and for folks not wanting to invest a ton of money it's an easy entry into calm water touring. As a former ocean kayaker - this is not a kayak to be taken out to sea, or for long distances where choppy water, or abrasion from rocks, barnacles, or submerged objects might occur.
I had actually considered buying different paddles before going out for the first time, but I'm glad I didn't. These are fine for just tooling around. We put the kayaks in the intercoastal (Florida), and the paddles never touched anything but water. I suppose if you were shooting rapids and you were pushing off rocks with the paddles you could break them.
Instead, I bought ANOTHER Challenger, which I'm using this year at Donner Lake. I also bought one for my sis, so when she comes West she won't have to drag her boat with her. I am totally comfortable taking this boat out by myself. I went out at least twice a day that summer.I'm over 65, am 5' tall and weigh about 112.
Answer: yes