I know 5 mans aren't really the big leagues but at the moment it's what I have time for, unfortunately.
Last night I was in a ZA group with a moderately geared pally tank (in 346's and ZA gear). For the life of me I could not keep him up on trash of all things! I've healed ZA successfully a handful of times but this guy kept dropping like a stone on Nalorakk's trash.
My strategy was to toss a Rejuv onto him right before the pull and to then quickly stack LB up to 3, plus toss a RG just to keep him topped off. Even after that I found myself spamming Swiftmend and Nourish just to keep him above 30%. We did have CC on some of the mobs as well but it just seemed that this tank was eating heals.
That being said I have noticed that healing pally tanks has been very hit or miss for me. Some seem to be very easy to heal while others it's an enormous struggle to keep alive.
What I normally do in 5-mans is keep a full stack of LB on the tank and a Rejuv for Swiftmend, so that the melee get the free heal from Effloresence. I toss WG out when it's up on either the tank or whoever has lowish health. I do have HT and NS macro'ed as an oh shit button which is usually enough to buy me a few seconds breathing room. During heavy AoE damage I either pop Tranq or swap to ToL and start stacking LB on everyone in addition to WG. Most of the time it works fine.
Is there anything I should be doing differently and did I just happen to grab a mediocre/shitty tank last night? My druid's armory is linked below and I am aware that I am not at haste cap for 10 mans and my enchants could be a bit better (I'm broke 90% of the time).
Thank you for the advice!