I run a pali/shammy/druid

What I found works great with positioning is to have em on follow grab some mobs with pali and kinda park the pali for a second what this does is makes sure the other ones are in the same spot. then make the other stop follow, back up the pali into the others, then have the shammy/druid start meleeing

If yeh start attacking while there on auto follow, sometimes one will lag a lil and still be moving while the others already attacking and stopped they'll end up facing different directions and stopped at different places.