Speaking as healer. I aim for 2 things when raid healing. First, ive noticed that +Heals are only a good measure for where you stand among other pallys, dont feel bad if a priest or a shammy has much higher. Paladins are very strong SINGLE target healers. You will almost always get assigned a tank to focus on, and if you get put on raid heals (If youre comfortable with healing) mention your strength and ask to be put on one target. So thats the first one, make sure you have an acceptable heal target. And the other...spell crit rating. You get mana back for critical heals. Ive tried stacking mp/5, doesnt work NEARLY as well as crit. When I was sitting at 25% holy crit unbuffed, I stayed in a fight VERY long...when they add in a boomkin for the extra 5%....I could flash of light, with a holy light on the big hits, forever. I've done Gruuls, Mags and even Rage in Hyjal without having to pot once with a boomkin in the group. If you get a spriest in your party (VERY unlikely in a raid, theyll almost always be with caster dps) your set for holy light spamming nearly forever.
Tip - for raid healing, its a timing game. Its all about endurance, you do not want to go OOM. but you cant STOP healing. You eventually learn the fights and WHEN the boss will hit the tank. then you just cast a heal right before, so it lands right after the hit. Its a game within the game, finding out the timings. Yeah spam heal if you dont know the boss that well, but when youre comfortable, you can do really well.
Tip 2 - Personally, I flash of light as often as possible (Wear the pvp gloves for the 2% flash crit) because its a very fast 1600ish heal. but if you see a big chunk missing in your tank, divine favor and holy light. (If you think you have time for the 2.5 sec cast) its usually over 7k heal for me, and its saved the tank more than once. If you DONT have the time, do a fast flash, then divine favor and holy shock, its about 4-5k in ~1.5sec
Last tip - Make a macro or something, if the tank ever gets to 1-5% health, Lay on Hands...regardless of your mana level. The macro should LoH then take a super mana pot right after. Ive know pallys who fear LoH because their mana goes away...but think, would you rather have 1 healer out of 5 oom...or the 1 tank dead. its a good way for an instant 8-9k easy health for the MT. Its your "oh shit" button in the healadin world.
And thats it, those are my tips, coming from a raid healer of a long time. And Im goin prot now, so send me a message of tips if you got anything to say before you respec. Thanks and good luck, most importantly, have fun, hating your job is for the REAL WORLD, not for wow, you dont like what you do, dont do it, its that simple
_________________
