Hips don't lie: Hip drive solves my V4 crux

I'd been struggling on this finishing move which just felt impossible for me. My "plan" for the session had been to try out some leg pogo like momentum thing, but that failed. I then tried to just swing a lot more which worked in isolation but then failed when I tried to send it. I happened to chat with another more experienced climber who offered to help analyze what I was doing wrong. We practiced a "drive hips to the target first" on some sample holds and then tried to apply it to this finish. I got it first try in isolation and then sent the climb. Dang!