Taekwondo third dan here.
I should have quoted all the post, but thanks for sharing your experience. Especially about the weapon wielding part. (Which you made me remember that effectively is covered in what we do as "Be very very careful, and try to avoid/surrender/not get stabbed.")
LIttle clarification: the course of self defense is not Karate, but something else entirely different. It should be (Google translate has failed me here, expect strange translations) a codified mix and match of tecniques known as MGA( Metodo Globale di Autodifesa, meaning Global Method of Self Defence) officially recognized by the FIJLKAM. (Federazione Italiana Judo Lotta Karate Arti Marziali, essentially the official italian federation of martial arts.)
Also, yes, you also made me remember that i should avoid doing things from scratch and start with already established systems.
I dunno why i had chosen to doubt the utility of already exising systems Wait, just remembered: a grappling system too unlike reality seemed to me too unlike reailty to accept. Also i wanted to simplify things.
Given that i am willing to accept things even if they aren't like reality, i think i won't listen to that part. I may drop it if not simple enough, but not because not realistic enough.
If someone grapples me, my immediate response would be to put them in a lock of some kind
My english experience fail me, but your post as whole seem to be confirming my experiences too.
We doesn't do exactly grapples in MGA: It is more about defending themselves against peoples without Martial Art training. So about peoples grabbing parts of your body with a single hand/two hand, trying to punch/slap you/headlocks when both standing, and how react to not hurt yourself and escape/make sure they are in no position to attack you. (Usually by making sure they are with their belly to the ground, with an arm painfully twisted while you are standing/putting your knees on their back to stop them from rising.)
The whole punch them in a place they are going to be hurt for us is more hit them in a place in they will be distracted. (Generally slapping the face/eyes/nose, elbow blow/punch the ribs, and hitting other sensible parts)
I have also some experience watching peoples doing Ju Jitsu/doing a bit of it myself, but i am limited to doing some White Belt stuff and watching occasionally more experienced peoples do stuff. Nothing that i can discussi, given that it is half remembered in the first place.