highfivehooliyou wait until the peak because a jumper is slowest at their peakhighfivetheoretically you want to wait until the person you are airshotting is at the peak of their jump, and then you decide where to shoot based on how they strafewhy should you wait until they've reached the peak of their jump?
or you can just flick and hope
if i'm wrong someone correct me
Personally I prefer to hit them while they're on the upward part of the trajectory, because they've got less time to rain rockets down on me and kill me.