I often get asked if I am healing because I often had plenty of Mana in fights (like near full). I am disc speced and have plenty of mana regen gear (here is my armory link:Gear
So when I'm healing a single target, I let their health go down 11k (less if it goes down fast, but if it is steady, I wait), then hit them with PW:S>Penance>Greater Heal ( or just flash heal if penance crited a few times, or even nothing). I fill in any 'gaps' in healing with flash heal if penance is on CD, use that, that start over when weakened soul is off. If I'm only healing a single target, is there something else I should be doing be doing? (the highest I done is 10 naxx and those are always PuGs, so no real chance of me being part of a steady healer combo).