uuh you went to heroic BM? have you tried doing other heroics first? heroic BM is one of the hardest heroics out there, just below arcatraz

your guildies heard wrong

stay far far away from heroic BM. do something easy first like slave pens, steamvaults, mech or ramparts. once you've gotten the hang of healing those then you can step inside heroic BM, if you want.

for the other heroics other than BM, to heal for the single pull, hard hitting mobs (ie boglords and tempest keep robots) with streamyx's inherent lag is to spam your biggest heal (HT for druids I think). never mind the overheals and stuff, your group should be able to down the mob by the time you oom.

for the multiple trash mobs, focus on the tank mostly. If a dps get aggro he usually gets one shotted. Top up everyone else only if the tank is above 75%.

Slave Pens - easy. just a few mobs which are unCCable, so would need to be kited. 1st boss is tank and spank with a dps watching the totems. 2nd boss, as a druid healer, prolly would have to keep the tank up, with every range trying to stay max range and you HoT them when they get aoe damage. Last boss also the same. NR for last boss makes it a bit easier

SteamVaults - a bit less easy. first boss is same as normal, 2nd boss is a balance between interrupting the healers and dpsing down the boss. warlord is cake
Underbog - between easy and medium difficulty. after the 2nd boss there are mobs which are un CCable and also the boglords which hit a truck and grow after a period of time. mini gruul ftw

Mana Tombs - first boss requires a tank with very high shadow resists or 2 healers. last boss is a dps fight. above medium difficulty

Sethekk Halls - not that hard, easier with shackle and careful of fearing mobs.

Shadow Labs - medium difficulty, have to be careful of the assassins in the inciter rooms while doing the big pulls

Ramparts - medium difficulty. just have to be aware of the pats.

Blood Furnace - medium difficulty. 2nd boss is hard, best CC for this would be fear. There are fel guards near the end boss who hit a crap ton, sorta like the boglords in UB and SV

Shattered Halls - quite hard. especially on some of the pulls before the first and 2nd boss.

Mechanar - easy badge farming, recommended

Botanica - havent done, but people said it's not that hard.

Arcatraz - heroic arc make babies cry. true story. dont do unless you have a pally or priest for shadow resist

Escape from Durnhole - first 2 bosses are not hard. make sure you have a hunter tho, since there are pats that are on fast respawns (5mins iirc) which are un CC able and they'll summon 2 adds. if you have a hunter scatter shot them to pull they wont summon the adds (changed after patch to make it easier i think). epoch hunter is still hard tho and you only get 3 tries after you release thrall.

Black Morass - damn hard, not needed for any heroic quests, just do it if you wanna test if you're keng or not

don't worry about burning your mana for the trash, short heals are the win for the crazy pulls. there's some fixes in the upcoming patch to help make heroics easier. like the cleave radius, and locks can seduce etc.

I've healed through most of the heroics I've run thru either solo or with a shadow priest. BM was the only one I gotta admit hands down I cant heal thru yet. And I'm just a shaman. I think a druid could do it better anytime oh and ignore the fact that my sig below show's enhanced atm. I'm usually resto