I wouldnt open with it, the startup kills it. I usually just crouch and the beggining of the round. Most people really like to jump backwards and then forward cancel it. So I just counter them with 2A for a nice 4 hit combo + steins.
I do use j236A quite a bit, it usually throws people off balance (they just dont understand what to do with it) and inexperienced players are plain scared of it (I mean, its a big ball of lightning, must hurt like shit right?) and gives me time to set up more steins.
Its also real fun to see it clash with ouroboros and cancel it.
I used to lose to a lot of tagers too, then I realised most of them are sledge happy...but for the few good ones I've encountered, I think its just a matter of patience and controlling your space. He cant really do anything to you without spark bolt and then again you can try and bait it if you know its coming. Fishing for 5C CH is also a good idea.