Clair won't give you the Rising Badge until you've found the Dragon Fang inside the Dragon's Den. You need Pokémon that can use Surf and Whirlpool to get around the den.
You beat Clair fair and square, but she won't give up her badge (or TM 24, Dragonbreath) until you bring her the Dragon Fang. At least she allows you to keep the Dragon Fang, which when equipped, powers up Dragon-type attacks.
So grab a Pokémon with Whirlpool (HM 06) and swim into the Dragon's Den behind the Gym. No surprises in Gold and Silver; just grab the Dragon Fang and go.
When you go outside, Professor Elm will call you. Visit him for a Master Ball. It's recommended that you deposit it in your box so you don't accidentally use it. It is probably best not to use it on the Legendary beasts, as there are three and it will only get you one. Additionally, there are more powerful Pokémon to catch.
With all eight badges in hand, you've earned the right to travel to the Indigo Plateau and challenge the Elite Four. But what's the rush? With all seven HM's, the three dungeons we've previously ignored are now open to us, and the Pokémon they hold will be a great asset in the final battle.
Pokémon Found (Surfing)
|Dratini's family (except Dragonite are the only pure Dragons in the game. All things considered, Dragon may be the best type in the game, and Gold/Silver/Crystal finally adds a truly powerful Dragon technique. It's Outrage (at level 50), kind of a Dragon-version of Petal Dance. If you start aggressively leveling up now, it could be the best fighter on your team by the time you reach the Elite Four.|
|Old Rod||Good Rod||Super Rod|