I'm running my own authority... my son is my "back office" so to speak, so I don't deal with admin BS ... that's where the 10% goes... we use a few select brokers for the majority of our loads... my average is better than $2 per mile to the truck...
They have their own customers with lots of dtop and hook, but im sure they use brokers, my last company pretty much relied on brokers but i was getting .95 cmp plus fsc so i knew what i was making, regardless of what they got