Double's Team Talked About in Episode 399 (Patreon)

Basic strategy: Open with Grimmsnarl and decide if you need to set Light Screen or Reflect. If the coast is clear, bring out Mudsdale and Swagger it while Dynamaxed and then go all out. Bring Arcanine to Wil-O-Wisp if you see they are heavy on Physical Pokémon. Bring Gastrodon to switch in when you expect Water-type moves to hit, especially against Mudsdale. 

Earn those 600 BP this March!