Also, what length Kevlar thread? I'd be interested.
You mean the scrap cores? 54 cm IIRC (not at home). I am gathering them up for... someone, but if it goes well I can spread it around.
I'll be ordering a set or two. Never used them but I plan to learn.
I'm gonna theoretically /try/ to make a pace count video by myself using shitty selfie mode etc while in Iceland. It is, as discussed with pebbles-in-the-pockets, more about principles than practices. Once learned, it's easy.
But you should just come to the KC area sometime and we'll have another nav class!