Use items.
It doesn't matter what Pokeball you use. If you have the Master Ball left over, you could use that to catch Latias. However, Ultra Balls will work the best if you do not have the Master Ball. I'm guessing you don't have a Master Ball since your asking this question, so the best ball to use would be an Ultra Ball. Sometimes it takes more then once to catch a Pokemon, so you just have to be patient and try not to freak out like me when Latias runs away after chasing it for hours. :D
I would use a dusk ball.
the ultra ball is what i used to catch it...but you could use the master ball after you get it
best ball is always a master ball but i would use a poke ball cause you meet at level 1 just teach faise swipe to a Pokemon use it and use a couple poke balls
There is no GS ball in soulsilver or heartgold
ho oh
I used a Master Ball, but if you don't want to waste it then use A LOT of Ultra Balls.
I used an ultra ball so any I guess. make sure he doesn't kill himself first though
None
Just use an ultra ball or two.
use a master ball
probaby kyogre
well, obviously the master ball will never fail, but be smart and don't use it unless there is no other way. stock up on ultra and great balls and use those.
you have to use faulse swipe and when you see it again use an ultra ball
You have to fight it until its weak then use a master ball
Ultraball, Duskball, and Masterball are your best choices. But sometimes, if the HP is low enough, it can be caught with a simple Pokeball even.