Okay, if you can, recruit some PokeMon to help you, because I don't think discharge does anything. You're also going to have to master what I call "power circling" meaning learning to draw eight or nine circles per second. This will give you a great advantage. Oh, and don't be afraid to stop circling while he still has time left, because when he's in the ball you can start power circling, and the circles come faster then, sort of, because you've already got your momentum. Try it, and it may work for you. Also I recommend a water assist if you have one.