I just joined farm hack. I live in Quebec, speak French, own a copy of the book in question, have dealt with the publishers in France previously to order a quantity of the manuals and generally have a pretty good idea what the deal is. Translation is likely to be a big undertaking for something on this scale but I'm interested to be part of the discussion or maybe translate elements of the Triangle design that need translation.
I haven't yet built triangle hitches for the implements on our farm but it's firmly placed in the mid to upper part of my endless list of priorities.
Note that the folks from France recommend buying the male portion of the quick hitch from Lyng (or perhaps Jiffy Hitch in FL on this side of the pond) and then fabricating all your female frames. This is mostly because the locking mechanism, needs to be really robust, failproof and have a lawyer standing behind it. As such, the male design they provide in the guide uses a nut and bolt locking mechanism that's not "from the comfort of your tractor seat" slick but instead is intended to allow you to loan your trianglified implements to lesser mortal neighbours or mount them on a tractor that hasn't been blessed. I know a homebuilt locking mechanism isn't a huge challenge but when I stop to think about employees, apprentices and rushed implement mountings maybe they're right after all.
Glad I found this forum. Hope I can be of some help to someone interested in quick hitches and may it motivate me too.