Whenever I Tank (which will be PLD) my only self rules are: 1) Hold Arrgo on every pulled enemy & 2) use Def buff's acordingly
I only drop Sheild for Sword oath (if I feal like it) in boss fights for 3 conditions:
-Healer has shown mass skill in DPS'n & Healing on the probable large pull I did to get to the boss (or I know said healer)
-DPS are not giving me arrgo problems in Shield... especially if I stoped using Halone combo awhile ago
-Boss has predictable spots of low dmg or no dmg (won't drop it for high dmg fights, AoE or single target dodgeable or otherwise, like A12)
When I Heal (WHM only) the "Hate" I might be making is not normally seen as I have Marco's for my DMG moves baced off targeting my allies, yet with this I have never pulled arrgo of a Tank unless their not using a AOE arrgo moves on a mass pull (which cause is a "Why u not AoE arrgo controlling on a 4+ mob pull?") also Medica 2 to me is for AoE heavy fights or bonus HoT's to allow me more stance time