After watching the videos and doing some attempts I find that the most useful tips are that the angle needs to be almost straight down but just slightly to the left , and that the flamethrower enemy below needs to be alive for the trick to work. I don’t think the timing is super important though I could have just gotten lucky. Also the video tutorials are very very useful

I’ve actually been having the same problem, though I’m pretty sure the trick is just ridiculously inconsistent. I didn’t know there was a timing to it and I just thought it required the right angle. I’d love more tips if anyone has any

Can’t wait for a super Metroid style short boost to be discovered