Remember to: buy extra pokeballs, greatballs and ultraballs (I suggest carrying 30 of each pokeball, greatball and ultraballs), and bring your masterball if you still have it. However, follow these instructions to make it to Seafoam Islands and out to the other side.
If you have yet to defeat the Elite Four you can always Fly to Pallet Town and surf SOUTH until you reach Cinnabar Island. You do not need to go to Seafoam Islands to pass the game, but you might want to get there to catch Articuno.
