I recommend the master ball
throw a pokeball at it
the strongest pokeball is the masterball. the masterball can catch any Pokemon out of the 493. it doesnt matter what kind of Pokemon it is, the masterball can catch any Pokemon.
With some kind of pokeball. Maybe you should have asked how to find/get to ho-oh instead and not how to catch it.
Any kind of pokeball can catch Mersprit, but it is best to use a Pokemon with mean look if you have troubles with it running away.
the kind of pokeball you can get from red apricorns is a level ball. with this pokeball you can get Pokemon that have lower level than your Pokemon i hope i helped! :-)
You can't. Latios can only be found on Ruby. Latias is in Sapphire. And believe me, they are a PAIN to catch. You need at least 50 balls of any kind (not Master) to catch them. Unless you are extremely lucky like me. Tee-hee!
Same way anywhere else, walk around until one attacks, battle it until it's weak, and catch it with some kind of pokeball.
You catch Cobalion with any Pokeball that is possible to catch it in.
in southern island there was latias and latios you will meet latias in Pokemon sapphire and latios in Pokemon ruby
masterball if you want to catch a really strong legendary pokemon. use an ultra ball if it is a strong regular pokemon.maybe legendaries
A lure ball :)
activate it and throw the pokeball... isn't it kind of obvious? if it didnt work, its off, you entered it wrong, or its the old version.