What a fascinating find, Jan! Some observations:
The hull shape and construction is pretty much the same as the larger curraghs, with their double gunwhale and tarred canvas skin.
He was wielding a drawknife and compass plane identical to the ones that came down to me from my great-grandfather. As it happens, I just listed the Stanley No 113 plane on eBay today, having no further use for it and nobody to pass it on to. Much sought after by collectors, I think.
All this was happening at exactly the same time as Pete and Annie Hill of this parish were building Badger - any contact or comparing of notes, I wonder?
If I'm hearing correctly, he calls the rig "Tuna rig". I know I've come across it before, but can't find it in any of my reference books, and can't remember where I saw it, and who originated it.