Hazard View is great! For one specific thing, at least: finding ultimines. And it’s only useful if you can clear out a large enough area first.
Use your other tools to get that done: the first shot’s invincibility, pop Terrain Map and Scanner, then Recycling to clean up. Use Stealth Kit and hunt for any structures you’re sure of, then use Analyzer to find one that’s uncertain.
Once all of that is done, you can finally break out Hazard View. If you got lucky and cleared most of the map, the ultimines will be clear as day. Other times it will still be a mess. But even then as long as you used your other tools well, you can often narrow it down. Make sure to mark all possible spots before you start Disarming, because the indicators vanish the moment you do.
Oh yeah, and if you run out of Disarm, there’s still one way to get rid of an ultimine: land on it, then use Recycling. Use Armor Kit to survive the landing, since it can’t shoot you out of the air when you aim directly for it.