1" is a big hole for a cable. I'm guessing you had to get the plug through. Was it wood or composite cored? I'd coat the inside of the hole with epoxy before putting in a filler. Might even be able to get a transom drain tube to fit
Definitely do what's stated here (coat raw core material with epoxy or a reduced resin) then fill with 5200 and clam shell over hole.
11-19-2017, 11:18 PM
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