Instruction: Output yes if the supporting document can answer the given question. Otherwise, output no.

Input:
Question: is this design so this plate can be mounted somewhere you insert a swivel seat?
Document: Base itself is solid, but nylon insert is really sloppy. The seat post fits loosely in the base, so it was pretty much useless like this. I returned it for an exchange and the new one i got was sloppy also (although has a black insert instead of white for some reason?). I then thought the post was the culprit so I ordered a new post. Sure enought, there was no difference.
Since there is no place to purchase a base that has a brass insert, I guess I'm out of luck. I hope someone can learn from my misfortunes. Moral of the story: if you buy this base, you are gambling, hoping that you will not get one that is too loose. I hope you dont have the same experience I am having.
This is made so well, not junk like so many things can be. Quality product, thanks If you ever need a way to mount a seat, then these are for you.
I used it to replace the old bench seat to allow one of my fishing seats to go in the middle when not in use and it works great.
Stable ride, yeah!! Nice to have a large, big seat in my tiny fishing boat, so I can reel those big Northern Pikes in with the ease of a soft, stable seat.
Fits Shoreline seat mount like a glove. Would have given 5 stars if holes were symmetrical. So locate holes and mark the part position. Don't drill up three mounts, forget what goes where and expect the holes to line up!
Used to retrofit and extra seat in the boat. Be careful you have the  knee space for the seat to swing when fully assembled. Also be cautious you have enough room when drilling the hole in the floor to accommodate the bottom pin without cutting though a frame, an integral gas tank or supreme horror...the bottom of the boat. Use a small mirror to peer under floorboards before you pickup the drill or hole saw.
The one pictured has a black bushing. The one that I received had a white bushing. I wanted black to match the other ones in my boat. Also, a different type of bushing and is not as flush to the base as I would prefer. Hopefully all of the metal is stainless steel. The part below deck on the one I removed was rusted. We shall see over time whether it is or not. Pretty good price though.
PURCHASED FOR HUSBAND TO ADD AN EXTRA SEAT TO HIS BOAT ...HE SAYS IT WAS JUST WHAT HE WANTED FOR THE JOB HE NEEDED DONE ...EXCELLENT PRICE AND PRODUCT ...WILL MORE THAN LIKELY PURCHASE ANOTHER REALLY SOON SINCE HE LIKES TO PIDDLE ON HIS BOAT ALL THE TIME!!! REALLY FAST SHIPPING TOO!! !
I purchased this, the post and sea mount. There is lots of wobble with the set and is going to make for some intresting fishing in rough waters.
Answer: no