By using a simple addon to track my pet's buff today I managed to completely change my gameplay and overall performance. The game should be already include some basic metering tools :
Addon for Proc/Buff Addon : r/wow
Patch 7.0 Hunter Info Dump: Pets, addons, stats, trinkets, and more | Eyes of the Beast
Fizzwidget Feed-O-Matic : Hunter : World of Warcraft AddOns
Addons and Macros | steady shot
Scattered Shots: Helpful hunter addons | Engadget
Overview - Pet Attack - Addons - Projects - WowAce
Pet Battle System - Wowpedia - Your wiki guide to the World of Warcraft
Best Classic WOW Addons - BUFF
Smartbuff - Burning Crusade Classic : Buff, Debuff, Spell : World of Warcraft AddOns
Addons | Rapid Fire
The Hunter's Menagerie - Addons - World of Warcraft - CurseForge
Patch 7.0 Hunter Info Dump: Pets, addons, stats, trinkets, and more | Eyes of the Beast
PUP Gearswap WIP - FFXIAH.com
DoTimer | WoW Addons - DKPminus
CDTracker : Buff, Debuff, Spell : World of Warcraft AddOns
Aspect Of The Hunter - Addons - World of Warcraft - CurseForge
Hunter pet bar? : r/wow
MoP Addons | World of Warcraft Addons - DKPminus
Addon: RaidCheckList | Rapid Fire
What's Training? : Classic - General : World of Warcraft AddOns