I actually have a Yakima rack for the trooper - I bought it with the intent of seeing if it could be adapted to the VX - unfortunately the cross bars have more curve to them than the VX bars - if you're interested, I'd sell the racks and towers for $50 plus shipping. They are in their original boxes and originally had a snowboard rack for holding a snowboard - mine didn't come with it. All parts are still sealed or wrapped (I pulled the paper off the crossbar but rewrapped when I saw it wouldn't work). If you'd like it they're yours.

-- John