Special Trainers
There are six extremely helpful Pokemon trainers in Gold/Silver whose telephone numbers you should definitely keep in your Pokegear. These six will randomly give you tips on how to find rare Pokemon and steer you towards areas where certain Pokemon are currently "swarming."
Fisherman Ralph (Route 32): Helps you find Qwilfish
Hiker Anthony (Route 33): Helps you find Dunsparce
Bug Catcher Arnie (Route 35): Helps you find Yanma
Schoolboy Chad (Route 38): Helps you find Snubbull
Fisherman Wilton (Route 44): Helps you find Remoraid
Hiker Parry (Route 45): Helps you find Marill