Does anyone else use focus target? I set my tank as my focus target, and I can still keep the boss as the target of offensive spells, and heal the tank without doing much.

/micon Cure
/ac Cure <mo>
/ac Cure <f>
/ac Cure <me>

This cures my mouse over target first, or the focus (tank) if I'm not mousing over, or myself for when I'm solo. I do the same for Regen and Esuna.