I know, i know. You wont watch 90 minutes of it...
But try to get to around the 20 min mark, its really eye opening and its nothing what you'd expect.
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I'm sure you could train a chimp to successfully tank a 17.
Pretty sure it was naowh who did a +20 in SL, BLINDFOLDED, having his team guide him where to walk.
And really, if you can't carry the group as tank? you're by definition bad. Anyhow, with your attitude, we all know you're a bad tank.