Nate, are the stats at the bottom of the forum accurate? Are we still running vBulletin 3.8.7? I did a bit of sleuthing and found a Mobile Suite available for vBulletin 3.8.10 and up. I'm not a techno-wiz, so I'm not sure if this would be compatible or not. The link is here:
http://www.vbulletin.com/en/mobile/
It's 150 USD.
Apparently, vBulletin 4 and up comes standard with a Mobile Suite.