Some people make an end pour on each end of the kayak. I did not want to add the extra weight and epoxy is very heavy and even more expensive. I used 20% epoxy and 80% microballoons to fill the ends of the bow and stern.
Now I can drill a hole for a grab rope to go through. And this will help me as it gives me a flat surface to glue the deck to the hull.
It is very light because the microballoons are mostly made of air.