Sigh... How many times have I tried to defeat Lance?,


Today I finished training my Pokemon to face the Indigo Plateau in Heart Gold. I defeated Will, Koga, Bruno, and Karen each only taking a few hits. Most of their Pokemon I defeated with one hit using type as well as level advantages. Then I came to face Lance with my starter at level 50 and the rest of my party at either 48 or 49 only to be defeated and having to reload... Truthfully I wouldn't have a problem being defeated and going back to train, but that means I would have to pay up a pretty penny to Lance. What to do indeed, I've already tried numerous times.
In conclusion. For all people about to face the Indigo Plateau in Heart Gold or Soul Silver-
Four the first four trainers, you shouldn't have a problem as long as your Pokemon have been sufficiently trained and you don't pit your Jumpluff against a Houndoom. (Your own Pokemon against one that's super-effective against it.) Lance is another story altogether. He has a level 46 Gyarados, a level 48 Aerodactyl, 2 level 49 Dragonite, a level 50 Dragonite, and another Pokemon that I haven't seen yet, though I doubt it's stronger than his level 50 Dragonite. His Gyarados is a piece of cake if you have a Pokemon that is super-effective against it. In my case it was my Ampharos. It took half of my party to take down his level 50 Dragonite, leaving me with a Poliwhirl, Ampharos, and Typhlosion. Once I was miraculously able to take down in of his level 49 Dragonite, but that left me with just my Poliwhirl. Other than that I was always defeated by one of his level 49 Dragonite. My only tip for you is to train train train! :)