Healer Role in Dungeons

[Donouchi]

"......
Also NEVER cast regen on tank while not fighting and NEVER stoneskin just before he is about to pull. THese will give you immediate hate.
....."

I want to go more in depth with what you are advising, I hope you don't mind.

He says to never cast Regen on the Tank or Stoneskin right before a pull because 99.9% of the time, this happens:

Regen(Right before pull) > Tank Pulls > Regen Tick > *That Regen tick just put you at the top of the Threat meter of every add that comes with the pull* > *Cue Benny Hill music*

The same reasoning applies with casting Stoneskin right before a pull where the Stoneskin could be applied right after the pull which would put you at the top of the threat meter on the adds.