Do you box melee or ranged? As in how do you use IWT?

Reason I ask is because since MoP I often wonder if I face a multiboxer in bg's, but they turn out to be bots (different realms). They somewhat behave the same, but don't seem to use follow. And they are actually tough to fight alone since they have pretty good combat mechanics and they seem to use IWT. There is a lot of pressure from the community to deal with bots, and I could imagine that blizzard set up their detection tools more strictly, where multiboxers get banned unintended.