Hey Guys,
after beating Norman in Petalburg City (6th Gym Leader, u can Surf now), i decided too catch a Gyarados. Really fast i found one with adamant and ok stats. After this i only play with him, till the end. It was just crazy how he counters everything.
Here are the Moves:
Ice Fang
Dragon Dance
Crunch
Aqua Tail
Pretty Standart, Thunderbolt no needed.
I reached the E4 with level 92 Gyarados, i wasted a little bit of xp for a electrice Poke, this was definitively false.
The good thing about the E4 is, thats the first Poke is allways weak. So u can easy cast Dragon Dance 3 - 4 times, more not needed. After that u just one shot everything. Dont forget 2 - 3 Potions and something like Elixir.
Good Luck at all, it was my first time in Hoenn. And u can see, u dont need a full level 100 Team. Just one Level 90+ Gyarados. :)