Originally Posted by Pokerealm
No, Bite Stamp doesn't hit multiple parts.
And if it does, it happens rarely.
Serpent Air is what you want.
It's great against normal monsters, aswell as bosses.
I use Bite Stamp all the time against bosses and it does hit every part of every boss reliably, provided you aim it correctly. (This is not hard to do at all except on Humilias; certainly, Bite Stamp is far easier to aim than Over End.)
Serpent Air is ok, but its limited range is a real liability against most bosses since you generally don't want to be right up inside the boss when you're attacking. My current preferred weapon is my Foie Haze, which has Air Ride, a PA that hits a similar area to Serpent Air. But I still switch out to my old Hadan for bosses because of the big advantage that having a ranged hit gives me. Mother Trinity, Falz, Reyburn, Octo, Mobius..... all become much easier to kill with that range advantage. Plus the kills are faster too, since you're not getting knocked around/having to heal up.