When I topped the meter in Aran most people in the group were like WTF. But to tell you the truth Aran is probably the friendliest prot DPS boss.
Max out AP
Max out Armour Penetration
Cap hit for specials (142 )
Dual Wield your 2 best 1 handed Weapons (I use
[Dragonstrike] with Executioner &
[Heartless] or
[Fury] with Mongoose
I have found that spamming dev and hs more effective for maximum damage. 15 hits of Whirlwind was about 12.4k damage and 19 hits of Heroic Strike was about 47k damage. Maybe just unlucky.Don't forget save some rage just before flame wreath and then hit beserker and go for it. Once he's down to 20% spam execute.
It's better for the tank to be able to do a heap of damage than just be an interrupt machine, then you don't have to worry at all about the poly. Last time I did it his mana was like at 50% when we killed him. I only interrupt when I can, remember there are a ton load of classes that can interrupt and its not just up to the melee to do it. Its actually easier for casters to interrupt because they can use stop casting macros, where once a melee is on GCD we have to wait before we can interrupt.