A rowing exercise.
I think BB rows prob don't hit them as well as a closer grip exercise like T-Bar rows or just a seated row with close grip handles. Think of the stretch, when you pull your arm across your chest, that's then the're stretched right? Better mimicked by close grip than BB, IMO.
Raises work for some ppl, but you can't go particularly heavy on these and maintain form.
A lil while back ppl were talking about lying rows. Set up your incline chair at 45 degrees (or whatever, but steepish), lie with chest on the chair back, lower legs on the seat and grab your DBs or BB, and raise the weight using the rear delts.
You're effectively doing a bent over raise, but with the rowing motion.