Underwater GPS

I'm working on my flip turns. I think I finally have risen to the point where I don't fear banging my head on the wall, I am no longer having air turns (ie. missing the wall entirely because I flipped too soon), and the pool water is no longer filling my head. That being said, my flip turns are still ugly. I need underwater GPS. Once today I ended up in an adjacent lane, twice when I pushed off I seemed to go at a 45 degree angle up--popping out of the pool like toast, and on another occasion I didn't know if up was down and down was up. I'm trying to hesitate a second before I push off the wall to be purposeful in my trajectory. While I await the day that this all becomes natural for now I can only ask, "no video, please."