This is really something Ken. Reminded me of a trip I made back in 1985 to a country in Africa called Malawi. They have woodcarvers there that are just as incredible.
I entered a Catamaran race there that sailed the length of the Lake Malawi, a support catamaran that was huge broke a rudder blade in a storm.
When we beached for the end of the day we landed in a place called Lions Cave, not accessible by land. The locals which formed a small fishing village were asked for help to see if we could repair this support boats rudder blade.
The rudder blade was about 4.5ft long and shaped like the wing of an aircraft both sides.
One local woodcarver went down to the beach knelt down next to an old dug out which had a hole in it and was therefore not useable. Lay on his side felt the thickeness of the base with his hands wrapped around it and then said no problem.
One hour later he had chopped his way through the base and had carved out the rudder blade. They then took a steel bar and made a fire and proceeded to burn a hole in the top for the main rudder retention pin to go through.
What you might call a running repair. Was absolutely amazing to watch I will never forget it. Shows what can be done if the real desire is there.
For guys that are wondering where the wood carvers are in the video I have attached a few maps.
By the way the tools used in the video were the same ones I saw used in Africa.