http://us.battle.net/wow/en/character/doomhammer/Syliah/simple
There is my armory, I just recently decided I felt comfortable with healing so I decided to give a go at the troll heroics and see if I can start reaching the Valor cap each week. I have done 2-3 of ZA and the second half of ZG. The only bosses in ZA I really have problems with are the dragonhawk boss and depending on what spirits Daakara. The rest of the bosses I can practically sleep through, however the trash has just been killing me. Depending on the size of the pull I'm often using 30%-50% of my mana and the tank just keep pushing (even though every time I have come in the healer had left and the timed event had already been missed).
I think the major issue is I don't feel like as disc I have a good system for reacting to non-single target damage. Typically on the trash pulls I bubble the tank then do two either heals or g. heals depending on how hard the damage is coming (in most cases it has to be g. heals) and then either penance or PoM to fill the half a second to a second until I can rebubble. The damage to the tank is usually so high that I can't afford to take the time to throw them a heal or a g.heal and I usually just let them stay damaged until they are at risk to die and start flash healing.
Any help would be nice, I don't know if I should change around my reforges, it seems like since I don't feel like I have enough time to throw an extra heal haste is what I should be looking towards. I know I'm missing a lot of chants as well which could make a difference, I'm sure some heartsong procs would help the mana issue. The other option is is it just easier to heal heroics as holy? I'm sort of feeling disc isn't the greatest as a stand alone healer but work really well when paired with others aka raids.