what, did all yall use your master ball already?

is leaf green, i found it at route 11, (the route to the right of vermillion city), when i got fire red, i found raikou there also. coincedence?

lv 62
modest

Surf
Ice beam
Calm mind
Roar {will be mirror coat}

=) found at route 2. did the max repel building trick

and yes coincidence

i found raikou at the same route as entei

I found my suicune in viridian city.

Well I find my at Route1 after I defeated the Elite4
Suicune will change its location if u change ur route or city same
as

Does saving in a wild grass patch while using a Max Repel work?

No it doesn't work as I have tried that myself as if you do battle it and fail to catch it the Dog you are fighting will be in a completely different area.

The most useful (but the hardest) method; having a ULTIMATE PKMN-CATCHING TEAM;

~ Train a Dusclops w/ Spite, Protect, Subsitute and Torment.
~ Train a Umbreon w/ Mean Look, BPass, Screech and Charm.
~ Train a Scizor w/ BPass, False Swipe, Sonicboom and Light Screen.
~ Train a Wobbuffet w/ Encore, Counter, Magic Coat and Safeguard.
~ Train a Crobat w/ Mean Look, Taunt, Protect and Sunny Day.
~ Train a Mawile w/ Sweet Scent, Sing, BPass and Fake Tears.

Have your Umbreon at the lead. Use Mean Look when you see him and use Screech and Charm 'till you can't use them anymore, than BPass to Scizor. With Scizor, use Light Screen first, Sonicboom a few times and FSwipe until his/her HP becomes 1; then BPass to Mawile. With Mawile, put him to sleep and use Fake Tears and SScent until you can't use them anymore. Then, BPass to Dusclops and use Torment-Protect combo. Use Spite if he manages to hit you, and start chucking Ultra/Timer Balls to him. Wobbuffet and Crobat are back-ups in case he kills any of you PKMN. To avoid this, train these PKMN to Lv50 or higher.

NOTE: Finding LegenDogz is way hard. There are NO tricks to make them appear on any route, that part is PURE LUCK. The team I prefer is for catching em easily when you see him/her, especially if you don't want to waste your Master on him.

EDIT: I caught my Latias on Sapphire, Latios on Ruby, Suicune on FireRed, and Entei on LeafGreen with this method. I was lucky, as it took me 30 mins to find both

I caught my suicune in near the diglets cave where there is grassm, cant remember the rout anyway it took me 2 to 3 hours to find it. At last i found one and caught it with my masterball thinking that it will fled.

You know what, I think you might be on to something. I searched far and wide for my Suicune, and a long time too, and it showed up after I used sweet scent a couple of times! May be a coincidence, but I like to think not so.