First of all, let's all agree on one thing: your lats are not "wings".

Having established that, getting a big back isn't rocket science. Do a lot of tuggin' and be consistant and you will get big. The Fat Bar DD Low Row is a great combo exercise; big lats and you can work on your grip.

Check out the picture: Can you spot the following things?

Prowler (with wimpy weight on there)
Several med balls
Blast Straps
Various lat attachments
EFS lat pulldown w/ low row

What you can't see is Dave Tate. That's because he's wearing camoflauge.