its not simple, but the explenation is, stay in a hunters blind spot, fear, get the dots up, get close so he cant use bow, but not so close that he can use sword/axe or what ever he happens to use
i have a 70 hunter as my main and a lock (also mage and rogue but dont bother with them much) and it really annoys me when that happens, but make note of his name and when you see him again run for the hills as he`ll remember how you beat him and more then likely be looking for some pay back.......the only other way i can think of as it happens to me often in battles, stay back, wait till the hunter is in a fight and dot dot dot him he either dies from who he is fighting or from you, but thats cowardly and when it happens i often make it my mission to pay him back 10fold

Hmmm as a hunter u should know that blind spot has been patched... i wounder if u have a hunter at all...
-_-;