So pretty much I want to know how to make my low kicks most devastating.
I did Kyokushin karate for a few years(until our dojo closed) and it helped a lot. Back then my low kicks were pretty alright, and a good one was often enough to disable my opponents leg until the end of the fight(in my belt category at least).
Now I'm doing traditional jiu jitsu now and every time we are sparring I find it more and more difficult to land a decent low kick(not going full power, just enough to stop/hurt my partner and not break his leg).
So the question is: when is the best moment to land it in order to make it most devastating?