How important are big traps if you want a big back?
Two words: Brock Lesnar
Trap’s make up a good part of the back’s overall size and to get a big back you need to deadlift, which is the best trap exercise I know of.
Christian makes a great point. If you can stand 30 seconds of grown men pretending to rip one another apart, tune in to the WWE and check this guy out. He is a MONSTER!