With a geared enough group you can ignore the slime mechanic completely in Turn 1 (i.e it'll split before it gets more than a stack anyways).

Turn 2, for a group that has been doing coil for the past several weeks I don't see the point to doing it this way.. you'll clear it faster just doing it the normal way .. personally have better things to do than AFK for 7 or 8 minutes to wait for it to get to 1 click to use this method so this isn't exactly a time saver