Drew, I'm pretty sure those Yakima towers can be dissassembled a bit and mounted flat to the lid. It would involve drilling holes in the lid for the feet and doing away with the gutter mount stuff, but it should save you a couple inches, and doesn't require any custom fab work.
Just a thought.
Just a thought.
I bought up 6 at that price. They are sturdy locking latches that are really nice. I was stoked to get them and they came with a gasket too. They were one of the best deals I got since working on this trailer.

