[On a boat that was later determined by interrogation to be a 1973 13-footer] while fixing some crazing and botched repairs I found [a hidden object] under an obvious repair.
[The hidden object] was packed with [an unrecognizable term for a material that was later determined to be “bondo”].
The outer ring [of the hidden object] appears to be PVC.
I think [the purpose of the hidden object was] to drain water infiltration.
What [was the purpose of the hidden object]?
[Moderator’s note: I have deleted a number of posts in which the originator of this thread was asked to supply essential information, which he did, and I added the missing information to the original post.]