The mini games in pokemon called the Pokethon or something is divided into five categories: Speed, Skill, Power, Stamina and Jump. A good way tp win speed is by having a fast pokemon with high speed and stamina. Power having a good power and Stamina. Jump having a pokemon with a good jump and speed. and Skill is good to have a well rounded pokemon. It is good to have a high stamina, power and speed for the stamina contest. If you oblige with the things i have said then you will succed. Practise makes perfect and try different combinations of pokemon cause you never know which one might be the key to winning.