Aye I play hunter at 70 pvp, and it's all about constant movement and using your evasive skills as much as possible.

As you get higher levels, there are more skills available to you that will help, more traps, 3x snake trap procs is gonna really ruin a casters day, TBW on 3 guys and 3 red kitties will also hurt alot

However, given all of this, managing to evade a persistent well geared warrior, semi intelligent rogue or team of rogues will never stop being a nightmare I'm afriad.