Depending on your team, the dmg from the pool shouldn't be enough to kill them. If so, then some cd's, healing pots, etc to get them back up may be needed. I do that fight 2 ways depending on the team I'm using.
With my 5 paladins I just /follow to each pool while doing what dmg I can while moving. The pools don't stack so running through another with the leader will apply to 1 of the followers. Depending on the travel time I do 3 or 4 pools. I try for 4 each time, but I have no danger of not finishing that fight on paladins.
With my mixed team, I utilize click to move. I cycle through the windows moving them to the pools as soon as possible with a single right click. IWT to get them to face boss if they aren't after pools are collected.
Have not done fight with 5 dmg team.