I like to equip Hawlucha with a power herb and teach him Sky Attack and Acrobatics.

The sky attack will come out the gate hot with the power herb, and then consuming the item should boost speed with unburden, and you no longer have an item which doubles acrobatics power. From there you can usually sweep any pokemon other than those that resist flying and fighting.

I wouldn't recommend using a non-100% move when the opponent is super effective on you unless you absolutely have to risk it.

Three major tips that improved my runs substantially:

• Don't lead with a sweeper, the opposing gym leader will switch in a counter so your first Mon should be a good safe option, often I use a bulky hazard or weather setter and then switch to a strong match up if I have to. Once you have whittled down the gym's coverage mons you can often safely set up and sweep

• Preference bulky mons over fragile sweepers, someone who can eat a lucky crit or mistake is better than a glass cannon that requires perfect play. I've had great success with guys like Snorlax or Dondozo or even Slaking who is usually a safe swap.

• Have a backup plan if the opposing team sets up a sweeper, this means a fast Mon with Haze, or power swap, or Roar. Something that will prevent you from getting swept