Ramzi's method? Any ideas?

I've tried reading about this technique but I'm not really getting anywhere. I know left supposedly is girl and right is supposedly boy but I keep seeing things that say it's 97% correct and then seeing other things that say it's only 50-50 at best. Then I see that you're supposed to reverse abdominal u/s pictures but the very next thing is someone correcting that, saying no, you have to reverse transvaginal ones. I could just pull my hair out!

Is there anything to this? I have pics from my 6 week scan, transvaginal. Swayed boy but feeling girl. Happy either way but since I've had 6 week and 11 week scans, I don't get any more for a while. Only got 10 week and 22 week with DD and going off my appointment schedule it could be 23 weeks before I find out this time. So I'm just playing the guessing game.

Any ideas?

This is the 11 week pic again.