I was thinking of ways to do non-lethal moves and this is what I came up with:
When you attack an opponent with the intention to just knock them out, roll +STR.
on a hit deal your damage, halved. If the damage was enough to bring them to 0 HP, they are just knocked out for a couple of hours. On a 7-9 they get the chance to easily retaliate. On a 6- you are at their mercy.
I’m not sure if STR is the right stat or not, its not exactly powering through…