I've seen shoulder yokes hanging on the walls of the oldest houses in the
Village Historique Acadien (a theme park/museum about the french settlers
of New Brunswick). It's only recently that I took notice of them.
My land is a woodlot. Last year I cleared a spot to get some light. This spring
I needed around 500lb-800lb of water every day to keep the seeds and seedlings
happy. I wasn't expecting needing this much. The well is probably 600ft away
from the garden and hauling all this water through the woods over rough terrain
with a wheelbarrow made me grumpy. So I built myself a 'djook'. That's how my
father calls this tool (the proper french word for it is 'joug'). I love it.
Like you I scoured the Internet for some directions but there isn't much.
Fortunately I had seen the real thing in the Village. Mine is crude in comparison
but does the job really well. The asian ones seem awfully hard on the shoulder
while I don't feel mine at all, it feels weightless. I used an adze to whittle away the
lumps that hurt and now it fits like a glove.
It's made out of quaking aspen, it's around 40 inches long. As you can see in the
pictures things don't need to be smooth but the shape does need to be right. The
hole for the neck is deep enough so that the weight rests on the trapezius and
not on the spine. Also the cup on the inside is deep enough so that the yoke
doesn't touch the acromion (the shoulder bone).
Be careful about putting too much weight on your spine while fitting the
yoke. Being impatient I had to try the yoke before it fit and the next day my
neck punished me. It was a weird, unusual pain.
If I was to make another one I'd choose a log without a huge knot

This piece
of wood was just lying around and I'm kind of lazy so... And I could probably
make it less bulky although I don't see the need for it. Like I said, I don't feel
its weight. Two water buckets weight around 70lbs. I will break before it does.