Managed to get out for a sail today (not much wind in the Hawkesbury though) and got some maintenance done. Night Cap has an untreated Beech toe rail, which I imagine is the original (almost 30 years old). Where it overlaps the hull to deck joint there is a gap inboard i.e. towards midships). I scraped the gap with a small screwdriver and with a putty knife. There was a lot of dust, mud and rotted Beech in the gap. The material that I removed from the gap was moist. I am thinking of cleaning the gap again, then getting the moisture out (bright sunny day or using a hot air gun), then sealing with something like Sikaflex. My concern is that if left as is, the Beech will continue to rot. Sealing the gap will also keep water away from the hull to deck joint. Alternatively what if I just spray or splash salty water into the opening regularly, as apparently wood does not rot when exposed to salt water. Hatters, let me know what you think.
P.S. the rest of the toe rail is in pretty good condition.