Another question, is it essential to have strobe follow when playiçng melee teams? Or IWT is enough?
I'm on my second all-melee team, I do lots of wotlk heroics, and I use neither IWT nor follow strobing. If I need to reposition I have a follow key that is right by my primary DPS key (and my Assist key, since I don't use auto-assisting either except for vehicle fights). You can watch my video stream for a few minutes if you want to see what I do and how it works out for me. (go to isboxer.com and click ISBoxer Live! on the left)

By comparison, strobing would offer me no benefit while IWT would be very likely to improve my handling of various encounters. For example, handling Fear would be easier with IWT becuase I would not need to run my tank close enough to auto-follow again, nor switch to the guy to run him back manually. Strobing can't offer that because it's no different than me hitting my follow key