Little rot pocket

Made an accidental hole in the deck a couple of days ago between the transom and the mainsheet traveller, revealing some rot.

The deck is Douglas fir ply. Imported cars years ago used to come in big containers made of the stuff, and many decks in Wellington as well as ply-built boats are made from the stuff.

The transom is two inches thick and still in perfect condition.
Photos here show the hole, and where me and my mate Ben cut it back to clean wood.