Someone glassed scuppers shut from bottom

[McGillicuddy]

I think someone may have been planning to run the scuppers out the transom or perhaps you have a Moesly and it was designed that way wherein the scupper lines would cris-cros under the deck to the opposing side. Try to post some pictures. Many of these guys have already attacked scupper problems in different ways. I'm currently replacing mine as they were - thru the hull, but I still dislike that design.