I took a good hard look on healing in BWL and our Raids in general and came to conclusion that all Healers will have to use the same add-on due to and Difference between players. I know some of you don't like add-ons or are use to different ones, but in order to be more efficient and better organized we will use -LunaUnitFrames for 2 following reasons.
A. You can see who others are healing, therefore you already know to heal a different target.
B. You will be able to see for how much target will be healed or Over-healed not only from your cast but all combined, witch gives time to cancel casting or use lower rank heal to save mana.
It will take time to get use to it, but once you do it will benefit everyone.
Download it >>>Here<<< ... Just copy LunaUnitFrames and BonusScanner to your Add-on folder. There is also file in Settings that you can use to save some time setting it up. Copy the file in to this location C:\World of Warcraft Classic\WTF\Account\\SavedVariables
To open menu /luna If you have difficulty setting it up, contact your -Class Leader
Add Reply with +1 if you have read this and have Installed this add-on.
Update: I and Healusion have found alternative for those who don't like to use or can't get used to -LunaUnitFrames.
If you are a person who likes -Default Blizzard UI, than this is just for you :)
If you decide to use this instead, but already installed -LunaUnitFrames, just disable -Luna or delete it from your add-ons folder, How ever you will still need the >>-BonusScanner << . Once you done that Download the >>-HealComm<<, copy to add-addons and your good to go :)