After attending a bunch of bossing expeditions the last month on my Buccaneer, I noticed that the demolition skill hit animation does not visibly show itself on screen for certain parts of Horntail and Zakum Arms. This leads to the question if the skill is actually hitting or dealing damage to the area you intend to target. For example, when using demolition on any of the Horntail Heads in the main body (A,B, or C) the hit animation is shown at the bottom mid of Horntail. Spoiler: Hitting Head B With Demolition (Buccaneer Perspective) Spoiler: Hitting Head B With Demolition (Mule Perspective) Spoiler: Hitting Wings With Demolition Due to the nature Zakum and Horntail, most parties will have a fair share of members so it wouldn't be too clear if you are hitting the intended part of the boss. I suggest that the demolition skill animation becomes more visible on targets like the skills Triple Throw, Hurricane, Battleship Cannon, and etc.
Uhm, as in other's damage will not appear on your screen, not turn the visibility of your damage of to others.
Seems like the animation is always bottom-centered on bosses. You can see this in ht, zak and krex. Also if I remember correcting while krexing the dmg appears in the middle rather than above the eyes (will check later and update)
You probably already know this, but a good way to tell is if you see the animation of bubble charging or bar increasing (though you can't tell if it is charged of course).