Loaded the Yakima Pro 16 S on factory crossbars up for the UT vs. UGA game tomorrow. Snapped a few pictures in the process as well. The estimated cargo weight is 90 lbs conservatively. A few notes first:
1. The box cleared the rear hatch by about .5" the very first time I put it on the 4Runner, however when I loaded the roof box that clearance disappeared. The spoiler now slightly touches the roof box every time it's opened regardless of whether the roofbox is full or empty. I've added some rubber pads to prevent any major scratching.
2. The gap between the attachment points and the roof of the 4runner is about .25" when unloaded. That gap decreases substantially as cargo is added to the box. To prevent any rubbing or scratching, I've rolled some cotton towels and placed them under the box's attachment points. The tension when the box is loaded holds them in place. The shark fin also clears although that clearance decreases from ~.5" to ~.25" with cargo.
3. Using the Yakima crossbars eliminates the concerns about touching the hatch, roof, or sharkfin. It also makes it slightly more difficult to load the box post-tailgate and doesn't look as cool as the factory crossbars
4. The speed limits / speed of traffic between Atlanta and Athens (and just about everywhere else) are outside of the 4Runner's "efficient" operating range so consequently the mileage just sucks slightly more than normal with the roof box on.
Here are the pictures:
(Unloaded)
<a href="http://www.flickr.com/photos/marantzer/8033566376/" title="photo5 by marantzer, on Flickr"><img src="http://farm9.staticflickr.com/8173/8033566376_a7c275cce1.jpg" width="500" height="375" alt="photo5"></a>
<a href="http://www.flickr.com/photos/marantzer/8033565571/" title="photo4 by marantzer, on Flickr"><img src="http://farm9.staticflickr.com/8030/8033565571_87fd69b367.jpg" width="500" height="375" alt="photo4"></a>
<a href="http://www.flickr.com/photos/marantzer/8033565387/" title="photo6 by marantzer, on Flickr"><img src="http://farm9.staticflickr.com/8450/8033565387_8b3de03f25.jpg" width="500" height="375" alt="photo6"></a>
(What's going inside + a football and table cloth)
<a href="http://www.flickr.com/photos/marantzer/8033565671/" title="photo3 by marantzer, on Flickr"><img src="http://farm9.staticflickr.com/8035/8033565671_375bc5b7cb.jpg" width="500" height="375" alt="photo3"></a>
(Loaded)
<a href="http://www.flickr.com/photos/marantzer/8033566730/" title="photo by marantzer, on Flickr"><img src="http://farm9.staticflickr.com/8038/8033566730_544f5d54cb.jpg" width="500" height="375" alt="photo"></a>
<a href="http://www.flickr.com/photos/marantzer/8033565779/" title="photo2 by marantzer, on Flickr"><img src="http://farm9.staticflickr.com/8460/8033565779_ee7b3b4002.jpg" width="500" height="375" alt="photo2"></a>
<a href="http://www.flickr.com/photos/marantzer/8033565305/" title="photo7 by marantzer, on Flickr"><img src="http://farm9.staticflickr.com/8451/8033565305_74ff592d07.jpg" width="500" height="375" alt="photo7"></a>
<a href="http://www.flickr.com/photos/marantzer/8033655727/" title="photo9 by marantzer, on Flickr"><img src="http://farm9.staticflickr.com/8321/8033655727_b34f3f83dd.jpg" width="500" height="375" alt="photo9"></a>
(All the other stuff that makes a tailgate complete)

arty:
<a href="http://www.flickr.com/photos/marantzer/8033655833/" title="photo8 by marantzer, on Flickr"><img src="http://farm9.staticflickr.com/8040/8033655833_c3dd0efa8d.jpg" width="500" height="375" alt="photo8"></a>