Gym lockout is one of the biggest problem which deters active gym battle. Ever since Pokémon Go was launched trainers are experiencing errors when entering gyms. What makes the matter worse is a lockout system which prevent trainers from participating in a battle when the error is first encountered.
Pokémon Go 0.39.0 for Android and 1.9.0 was officially released on September 24. If you have not downloaded yet, head over to Apple Store and Android Store for the update. There are some improvements for gym battle.
Gyarados is a dual Water and Flying type Pokémon. This flying fossil although does not belong to the Dragon type can actually use Dragon type attacks. That is why it is well worth the 400 candies to evolve a Magikarp. However, Gyarados lose Dragon Breath as its fast attack due to the recent 8/20 update.
Here are the strategies and best move set that is super effective on Gyarados.