Some questions about Ekko

Ok so I just picked up Ekko, and I had a few questions about his stun and his ult. #1 how often does your plan of stunning someone in a fight workout? I feel fairly in consistent, is this something that is just going to come in time? I mean you need to essentially know what they will be doing ahead of time lol#2 for any mains or avid Ekko players how often are you able to plan your ult travel and baiting the enemy to being on it, I find a lot of what I do is a read and react situation, I keep aggressive positioning and after they engage if a target or two are where my clone is I ult to pick it up. I guess my question is how often do others read and react and how often do they try to plan and bait their ult for a kill