Inflatable kayaks (punctured) (Truro TR1)

Two INTEX Explorer 2 person inflatable kayaks offered. Both have developed an air leak in exactly the same place.

On each kayak the hole is inside where the ridged section ends; circled in red on top view image (taken from manufacturer's website, not actual photo). The ridge dividers that attached the two surfaces of the kayak base together have torn the upper material. In my opinion the manufacturer should have reinforced these areas, but didn't, and hence they gradually weakened with use and eventually ripped at the join. There is also some damage where the seat base and back joins, but that does not impact their airtightness.

I had a couple of attempts at repairing, but failed. Perhaps someone with a little more patience and skill could do a better job than I did!

Pump and paddles NOT included.