You know the one I'm talking about.
Pre-charge all your cooldowns before the pull and start casting your biggest AoE right as the tank starts running toward the group.

I (as PLD) usually get a shield lob off and, before one GCD has cycled, every mob I didn't touch is now making a bee line for the DPS. Then I get to hear all the complaining about me not holding hate.

This isn't a progression raid, it's DF.

Give it 3 seconds before you go ape sh*t on everything.

Sincerely,
someone who just wants to level a tank job.