Fly to Cinnabar Island, walk right. Then Surf up and down on the black line sometimes ypu'll find over level 100 pokemon! I even found a level 132 Mewtwo once and caught it, Pokemon on the black line do not erase your game, except Missingo does mess up your game if you catch him/her. Just to warn you he/she looks like a bar code and is black / pink / purple / white. Just to warn you about him/her.