Catastrophe said: Make sure you do it in a well-lit area. I always wondered why it didn't work for me and that's because I usually play it at night, with the light out, before bed.
Jaran said: Put it down for a few months while intermittently grinding. Only needed to get the team up to an avg of level 55 to take out the Elite 4 and the Champ on the first go :D And added you, shadow!