There isn't that much to this "trick". So, I'll keep things as brief as I can.
In Pokémon Legends: Arceus, Poké Balls work in a different way to how they usually do when they hit a Pokémon.

Go for it!
If it flies high up to the sky (or ceiling)...

Shoot! Almost had em'!

...the capture will be a complete bust.


But, if it stays low...

Alright!                                                                                                                                                       Picked the perfect Pokémon for this demonstration!

...It'll be a complete success!

I was originally going to scrap this thinking that a lot of people already knew about this. But over the course of the month, I thought that it was a small enough detail that was worth shedding some light on.
Keep in mind that a Pokémon can still escape from a Ball even if it makes a short hop into the air.

Now YOU can complete the world's first Pokédex knowing if your captures will be a hit or a miss!

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