See what's required to finished the quest is you need to use your newly learned Steady Shot, and shot one Tiki target (lvl 1) 5 times. I'm 80, so even though I'm stripped butt naked, with a low level bow equipped and nothing else, with pet on passive and switch to my duel talent that I have yet to spec -- I still kill the Tiki Target in two shots.
And unless I complete this quest I'm stuck here and can't move on to the next one. Is there anything I seem to be missing that I haven't tried yet to lower my dps?
I've also tried to post on the WoW forums, but it says I'm restricted to posting there. /sigh
Edit: I just finished talking with a GM in game and he/she suggested that 80's had seemed to be able to complete the quest shooting at Training Dummies in the Valley of Trials. So I dropped what I was doing, rushed over there, and sure enough it worked. I'm a very happy Hunter at the moment.