Curaga is meant to be used as a last resource, not to spam as soon as a couple members of the party go under 90% HP, for most part you should just stick to Cure II, and Cure III, it heals enough and god knows the cooldown is so short you can just spam it, If you use Curaga as last resource only you shouldn't pull hate, and when i say last resource I don't mean everyone in the party over 50% HP and one guys under 25% that's still Cure III situation, Curaga is for events like when and AOE hooks everyone and they're all under 25%