Here's an early set of Kirks, performing perfectly on a 3800 mi trip up to Nova Scotia and back! They had plenty of room for my gear, both inside and on top, and the insides stayed perfectly dry, too.
I added Scotchlite to the sides and back to increase visibility:
As you can see, Kirk built the rack with plenty of room for tie-downs. BTW, do you see the GoPro mounts?
What more can I say? They're 99.9% perfect!
(Now, let's talk about that bottle opener, Kirk...