For me, it was mostly bards and monks/dragoons. Until last weekend when I got Haukke roulette with a summoner. I had never been busier in my whole (albeit short) tanking career. I often alternate between enemies with our standard 3 hit combo to evenly spread the hate and make sure they'll not run off suddenly. I may use overpower once in a while but it's rarely necessary other than as the initial hit. T1 - heavy swing T2 - skull thunder T1/T3 - i don't remember what it's called. But this summoner, I honestly don't know how he was doing it. He was no.2 enmity on every single mob, and very often just a pixel away from peeling it away from me. Sometimes I had to stop mid combo and just spam overpower to stop them running off. A couple mobs would actually run off then turn around again meaning for a moment in time, he did manage to steal hate from me. TL;DR - godly summoner is godly. Now I know why the bestest tank I know says a truely good summoner is fearsome.