He turned 21 less than a month ago, and he's 6'6" 306lbs right now. Here is a video of Brockers vs. Georgia. He doesn't do much until right before halftime, but he makes alot of disruptive plays that don't always show up on the stat sheet. Towards the end is where the announcers mention that John Chavis wouldn't trade Brockers and Logan for Haynesworth and Henderson.
I don't see him take any plays off, he is always hustling to the ball. He looks like he tries the spin move too much right now and gets knocked off balance, but he will learn with experience what works and what doesn't.