I too am using Pitbull.
The latest in the 3.0 line with all of the options, not the 4.0 thing with 20% of the options.

I have the targets of my party members, all in one little section.
So I can quickly visually check that everyone is on the same target.
This is also good with Assist (IWT) based looting.
Once a corpse is looted, it is dropped as the target.
So I spam my IWT key to loot, until the entire party stops targeting the corpse.