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: I'd like to install on my 12 ft day sailer. Could I drill holes in the fibergglass to mount these? Thanks.
Document: just right. I have an old aluminum boat and the oar locks were 5/8ths. I tried some &#34;cheap fixes&#34; like plumbing parts but they squeaked,These were the right solution.
I have an old 10' Jon boat. I had purchased a set of oar locks recently. The locks fit very loosely into the slots on the old boat. Added these socket inserts and the fit is near perfect. Rowing is much more quite and with much less slop. I don't know if the holes on the old Jon boat were just worn out or if these sockets are required in all boats. This is my first.
These are  very durable looking and will fit the 5/8 holes in my boat to reduce to more std 1/2 inch dia  oar lock shanks
they are just what I needed to fix my Oar locks on my boat...I had had the boat for some months and just happen across these and figured why not try them. And they made life easy and the boat now can be rowed in silence
these worked as expected, no problems to say, they did the job just fine, used them on my boat word
fit great and seems to make rowing the boat a little smoother
These don't fit the seasense oarlock sockets we bought. We may have just purchased the wrong ones though. Research what fits your sockets better than we did.
Seasense Oarlock Socket InsertBecause nothing lasts forever, these inserts keep you from wearing your oarlocks out.When the original sockets begin to wear, simply replace them with new inserts.It's a much cheaper and easier fix than replacing the whole oarlock.
If you are replacing a 5/8&#34; oarlock with a 1/2&#34; one be sure to add these to your order. Works great!
Answer: no