You can do you job of decursing while maintaining good heals using HoT moves, and when you learn fights to know when raid damage happens and to which class members you get a HoT ticking before it happens. (example : ZG broodlord melee WILL get WW, when tank is good, i do rejuvs on melee and rejuv/regrowth the person eating charges)
Here is a ZG I healed tonight, had 1 pug pally. I am the druid (didnt have Hexxer or Beast card til after)
http://realmplayers.com/RaidStats/RaidO ... Raid=37723Spent a lot of time on trash sleeping things and some rooting.