With a stick. While they sleep.
In all honesty, I find being aggressive early on is essential. Get a Turtonator, Ho-oh, or even a Volcanion EX powered up as soon as possible and target Zoruas, if possible. Personally, I'll Kiawe one of those three as soon as possible, with Ho-oh as my preferred target. With fighting fury belt, you can OHKO Zoruas and save the big attack for a Zoroark GX. Against Golispod and Decidueye, they are dealt with using Guzma and anuthing but a powered up baby volcanion.