Pokemon soul silver: how to beat claire?

Level up your Gyarados to about level 40 or around there(make sure to keep ice fang)...also raise Flaffy to around the same level....the only one you might have difficulty with is Kingdra but for that just raise anything that has a resistance to it and just beat away at it's health.Hopefully it doesn't take long but just in case take a lot of revives and hyper potions.Hope i helped:).