Keeping track of explored areas in VR?

I played Subnautica in VR awhile ago, but I the biggest reason I stopped playing is that I kind of ran out of steam trying to keep track of all of the places I had or hadn't explored. Have there been any changes that make this more do-able? Or any techniques that people use to keep track of where to explore?

I talked with a friend at the time, and he simply said he drew a map, but that's hard to do with a VR helmet on. I'd rather not look at any pre-made maps because I really enjoy the sense of discovery.