Melee hunter fellows, how do you Mana management?

I am level 56 hunter, and I have just witched into Survival. Plan to reach 60 with Survival and start Zul'Gurub farming. Survival is insane damage, I and my Scorpid can 3 Yetis at a time in WinterSping. But I feel my mana drain is insane as well. After any 3 mob pulls, I have to stop for drink and eat. Just a wonder how other Survival hunters do their Mana management, especially during dungeon, are you stop for drinking after each pull like any healer as well?

I do 5/5 invest in Trap/Melee skill mana reduce. And my gear currently Agi heavy focus.