How to heal Tanks...

[AnotherPerson]

Seeing as you're a lv 30 ~ 31 WHM I believe I should probably tell you this.

WHM lv 30 - 34 is completely different from WHM lv 35 onward.
At lv 32 to 34 at Brayfox with -leveling/average gear- you would be struggling to heal as a WHM- mixing cure, cure II, and Stoning enemies when applicable. On big pulls, it would be very abnormal if you still had MP even if you managed your MP with cure for efficiency and cure II for immediate healing. I usually go from 1200 to 5600 MP by the end of a big pull, even using lucid and sometimes potions depending on tank gear and how well the tank plays with mitigations. This is at the same time maximizing damage output to speed up the fight. Cure II is expensive, and freecure being a trait only encourages this kind of playstyle at this level because mana is very difficult to manage for a WHM who has no oGCD healing. Brayfox is really a big checkpoint for White Mage especially to get accustomed to recognizing the speed at which incoming damage is being thrown out so you don't waste excessive mana.

HOWEVER --

This is because you don't have your strongest healing tool at your disposal at this point - the regen. Once you get regen at lv 35 + in an instance like Qarn - you will see a huge difference in how much you need to heal actively vs letting your regens heal the damage instead while you using Lucid Dreaming. In a big pull, I could use regen and sometimes throw a cure II or a cure while mostly DPSing because regen is effectively a weaker cure that's ticking for 15 - 18 seconds (200 potency per tick, which means 6 ticks = 1200 potency heal over time). Regen is also a 500 MP cost skill as opposed to Cure II for 1000 MP at 700 potency. From lv 35 onwards your healing tools only expand so it becomes much easier to heal after that.

[ZeSeKa]

Thank you, everyone.

Any advice on how to deal with Tanks that can't (or won't) hold aggro?

[Brandedblade]

Thank you, everyone.

Any advice on how to deal with Tanks that can't (or won't) hold aggro?

if you're not by the tank and you pull aggro, run to the tank and bring the mob to them. if they are aoeing they should be able to snatch it off them.

if the tank isnt using their tank stance, politely remind them to turn it on. however if they still do not turn it back on, then I'm sorry, you cant fix stupid and you're just gonna have to deal with it or leave and take the penalty.

[Hysterior]

Any advice on how to deal with Tanks that can't (or won't) hold aggro?

This cannot happen anymore, either their forgot their stance (their fault) or your had some HoTs on the tank like Regen before they started pulling (your fault).

[ZeSeKa]

Can't count the amount of times a Tank didn't turn on Stance and spammed single target attacks...

[Risvertasashi]

Can't count the amount of times a Tank didn't turn on Stance and spammed single target attacks...

I've noticed this when playing DPS in roulettes. Tank has stance on... but somehow I pull hate. Apparently they're single target attacking, or only auto attacking after the first couple of attacks.

Only thing you can do is try to make a tank friend to queue with...

[Raminax]

Assuming that you soldier on during those runs with weirdo tanks, you can always Repose enemies that aren't being attacked to ease your healing burden. If they're actually trying and struggling, stick close to the tank so they have an easier time getting the mobs off of you. One less thing for the tank to focus on when you aren't running around everywhere!

Otherwise, about the only thing you can really do is gently remind them to put on their Tank stances and use their basic AoE. As Larek said, it's pretty difficult to mess up aggro as a tank that's actually putting in the minimum of effort; they have to be trolling at that point, or they aren't even trying. Gear is hardly an excuse either - you'd have to probably be at least an expansion behind compared to the rest of the team for aggro to be an issue for a trying tank.

[ckq53]

Can't count the amount of times a Tank didn't turn on Stance and spammed single target attacks...

That happens to me sometimes but its a DF thing. I'll have it on when I go into a dungeon but when it "commences" it'll be turned off. I think it's a level sync thing or if I'm to far over leveled for the dungeon I'm in. It doesn't happen in every dungeon but sometimes I forget to check to see if the game was nice enough to turn it off for me.

[Canadane]

Yes upon level sync it'll be turned off.
I've been caught with it off too, thankfully I keep an eye on enemy lists and if they aren't glowing red it's a pretty strong indicator of what's happening.