A lot of this may already be known by high lvl players but I wanted to stick this here on our forums. I hope its correct.
[IMPORTANT:] Incapacitating different parts of the NMs also require you to stand at different positions appropriate for the part you want to break.
EXAMPLE: To break Buffalos Left Horn, the characters trying to break its Left Horn must stand on the left side of Great Buffalo. The characters trying to break its Right Horn must stand on the right side of Great Buffalo.
Great Buffalo:
Legs: Red Lotus II(GLA); Seismic Shock II(PUG); Skewer II(LNC)
Left Horn: Simian Trash(PUG); Brutal Swing II(MRD); Twisting Vice(LNC)
Right Horn: Spinstroke II(GLA); Victimize II(PUG); Bloodletter(ARC)
Uraeus:
Head: Concussive Blow II(PUG); Skull Sunder II(MRD); Shrieker(ARC)
Tail: Luminous Spire(GLA); Pounce(PUG); Trunksplitter II(MRD)
Dodore:
Eye: Concussive Blow II(PUG); Skull Sunder II(MRD); Shrieker(ARC)
Tail: Luminous Spire(GLA); Pounce(PUG); Trunksplitter II(MRD)
Elder Mosshorn:
Horn: Concussive Blow II(PUG); Skull Sunder II(MRD); Shrieker(ARC)
Haughtpox Bloatbelly:
Head: Concussive Blow II(PUG); Skull Sunder II(MRD); Shrieker(ARC)
Left Arm: Maim(MRD); Chaos Thrust(LNC); Foeseeker(ARC)
Right Arm: Riot Blade(GLA); Moonrise II(LNC); Barrage(ARC)
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But seriously make sure you're standing in the right spot. To hit the head you need to be hitting the head for example. To hit left arm on Gob, you have to be on his left side. Stuff like that is probably easy to overlook or forget at first.
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So...this would be the list for now.
Thanks for reading and hope it helps some people.
Also try
"you can incap bloatbellys legs, but it does not increase droprate.
Pretty sure Skullsunder, trunksplitter, Conc Blow, spinstroke, and skewer all need to be the second version.
The I versions of skills will not produce the Incapacitation battle log message, whereas the II versions will.
source:
http://ffxiv.zam.com/forum.html?forum=1 ... 893&page=1