Now that you’ve completed this floor, head up the next ramp.

This brings you to the roof of the tower, where you can pick up a Ghost Gem from the left side of the tower where it’s hidden, and ring the tower’s bell, though that doesn’t accomplish anything just yet.

You can also use Fly from here to leave, which is very convenient.

Head back to Mistralton and patch up your team now, because it’s time to face Skyla in the Mistralton Gym.

On entering the Gym, you should immediately notice that it’s immensely windy- to the point that Fresh Water man is outright blown into you, prompting an apology out of him in addition to the drink.

The Gym, he explains, is a giant wind tunnel- the huge fans located behind Skyla will start up every now and again, and you’ll need to be right behind a wall when they do or you’re going to get blown away as well.  He also suggests that you use Rock, Electric, or Ice moves against the pokemon here- just in case you didn’t know to do so already.

From the Gym entrance, duck quickly off to the right to find the first shelter.  Huddle there as the strong wind goes by, then scamper around the wall to face your first trainer for the Gym.

Battle: Pilot Flynn (2220 Poke)
Opponent: Swoobat Lv 37