Instruction: Evaluate the answerability of a question by analyzing the related document, outputting yes if the document contains information addressing the question, and no otherwise.

Input:
Question: will it keep my tube from sinking?
Document: Our tube was submarine-ing a lot. We have a low attachment point on the transom. This helps, but does not keep the tube from submarine-ing all the time when you throttle up. We will continue to use it. The quality is good.
I needed something to keep the rope out of the water when my son was on a tube. He is young and does not have enough weight to go outside the wakes because the rope was dragging in the water. This product keeps the rope out of the water and now he is able to fully enjoy the tubing experience.
I bought this to keep the tube from submarining and to keep the tow ropes from going slack in the wake while turning. It does both extremely well. This makes for a much more enjoyable experience for both the riders and the boat driver.I recently pulled a tube behind my jetski without it and regretted it immediately.
We bought our Booster Ball hoping to keep the water out of the kids' eyes while on our deck tube. It did that, and more. My husband reported noticeably less drag in turns, and I could tell, just by looking, that the kids were flying faster in the whips and turns than they usually do. It DID keep the water out of their eyes, and they all reported a more enjoyable experience with the Booster Ball in place. I recommend purchasing this product.
I purchased this to help keep the water out of the kids faces when pulling a tube. I'm honestly not sold on how much less water the kids get on their face. The reason I like this product so much is the visibility factor. This big red and yellow ball half way between the boat and the tube really helps other boaters to see us pulling a tube. The safety factor alone enough of a reason to purchase this product.Another thing I like is the built in rope.
This device actually created more drag on the boat than a standard tow rope did. It also did not keep the rope from spraying the tubers. The inflated ball is huge and was clumsy and crowded my boat.
This product does all that it says will do. The kids enjoyed not having water slammed into thier faces. Helps keep the rope out of the water and wake. NOT recommended for tubes that spin (Orbit).Will and have recommend to fellow boater.
looks cool, and certainly makes you visible on the water, but not sure it made much difference in preventing spray from the boat or jet ski. it does keep the rope up and dampends the yank you can get when first starting the tow
I have a pontoon boat with a 70hp motor on it and I was getting drag when I was pulling tubers. I got this in hopes it would fix the problem and keep the rope out of the water and it works 100% as intended.
While it does keep the rope out of the water between the boat and itself, it does little to improve the problem between the ball and the rider. It also seemed to increase spray to the rider. Not worth it to me - waste of money. I never saw anyone on my lake using one. That should have been a clue.
Answer: yes