Well, there are some elaborate strategies about loading up your skill bar with what the double cannot use. My N/E daughter tried those for a couple of hours and gave up, and I had no better luck. Sooo -- I put all her points heavy in fire, loaded up the bar with fire skills, dropped meteor shower going in, and while the double was still getting knocked down, ran up and unloaded the remainder of the skills. It was all over in under 30 seconds. Not very necro-ish, but it worked.
Basicly, don't invest all your points in spread out Att's. I.E. Just have about 2 Attributes Maxed, if you want. I would go with the fire plan, and just unload. Or life Sacraficing. Both of them are great ideas. Good luck.