My estimate is that my Yakima box will not fit over the bed. The clamps on the bottom of the box can only move so much. The factory cross bar mounts are too close to the back window. The box would likely need to go over the roof.
R1S reservation holder here. Snowboarding is my winter activity. I both fly and take road trips.
If the number of people in the car allows for one second row seat to be folded down, I keep the gear in the car. Otherwise I have a Yakima box I'll toss on the top (yes, aero hit with that, but I don't like my gear exposed to the elements and road salt).