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: is this goal sturdy enough for dunking?
Document: After reading many reviews, I chose to not install it in the sleeve and build a slight bigger pad and add more rebar to the pole. I'm glad I did, it is very sturdy, enjoy playing on it and feels sturdy enough for dunks.
However, once together, it was very sturdy but I suggest the application of a strong lubricant prior to trying to connect. Second, I did not use the &#34;sleeve&#34; provided in the kit when cementing the pole into the ground. I put the pole directly in the hole and poured the concrete around and in it. I think this provided more stability with less steps and we do not plan to take the goal with us if we move.
This is a really great goal for the money. The installation is difficult but not impossible. The quality of the glass backboard and frame is very good. Everyone was right about the concrete, six 80 lb bags for the 24&#34; dia by 24&#34; deep hole and 100 lbs to fill the pool. I did not use the plastic sleeve but just to measure how deep the pole needs to be in the hole. As a result, the pole and goal are very sturdy.
I had a bag and a half (80 lb bags total of 4, which was not enough) and ended up running short, just made sure pole was level in the amount I did have and will pour the rest in the morning.The rest of the assembly is a piece of cake.
1.Great basketball goal. I didnt purchase this from here but my local Hibbetts sells this regular price for $399.
This is a great hoop once installed. High quality and very solid. I did have some difficulties putting it together, here are my lessons learned:1) Make sure you get the sleeve deep enough into the concrete. It should be up to the clamps, but not over. Mine was a few inches too high and it caused me some grief because the pole was a bit wobbly until I shimmed the gap between the concrete and the pole.
The jack support plates have a problem...they are bent inwards to meet the adjustment jack but not far enough on mine. There were extra spacers in the bag that the instructions made no mention of but would have probably prevented the lag bolts from bending the metal on my jack and pole when snugging up the bolts--even bent it still works fine.
I read through the instructions a couple of times before attempting to install to get an understanding but used my own common sense and judgement for some parts. All in all, we are very happy with the goal for a nice price.
They will not sell or send me a new top post because they cannot assure me they would fit together properly. There is not enough QA  this product to support that.I would also agree with others, about how the two post are connected that you can tap them together on a 2X4. We put a piece of steel on the top and used a sledge to get them to line up.I wish I would have done more research on this product.
Take a look at a Gorilla or Silverback, the mounting brackets are near the far sides of the backboard. On this Spalding, all the support is clustered around the rim. The 4" pole also doesn't seem to be enough beef to hold the weight of the backboard.Want your kids to raise and lower the rim by themselves? Then I would suggest investing in a Bowflex machine to build up their strength first.Install? Your talking about install?!
Answer: yes