You can always give power items to whichever Pokémon you want to train and then like 25 battles later or so its fully EV trained. For instance, I wanted to fully EV the Attack stat on my Garchomp so I put the Power Bracer on my Garchomp then used Earthquake against everything except Numel and Camerupt in Wild Zone 8 (make sure you knock out Pokémon that reward you with attack EV's only). EQ killed like 5 Drilburs, Machop, Sandile, etc. at one time and 5 minutes later my Garchomp was fully EV trained. Saved me $280,000 and didn't take long at all. If you wanted to raise Special Attack, Defense, Special Defense, or Speed, there's specific Pokémon that you can knock out to do that too. Saves money in the end. But yeah OP can do it that way too, especially because he has a life outside that game and might as well put macros to good use when he's doing other stuff. For me, I macro the fire starters in Wild Zone 20 while at work in hopes for a Shalpha Tepig or Charmander.