How to repair small hole in roto molded kayak

I have a tiny hole in one of the scuppers on one of my kayaks.
here is a picture of it. What would be the best materials and techniques to repair this small hole?

Marine Goop .Takes a few days to cure but should do the job.

Ya, that’s not too bad. Maybe even the milk bottle and heat gun trick. It’s on YouTube.

I plastic welded it. used a heat gun designed for hot air soldering and has adjustable temperature. runs nice and dry now.

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