I had Gator Trax build me this bar and mounts to straddle the tray and floor in my F4. They did an awesome job.
I wanted a tall bar for driving standing up as well as mounting my GPS and spot light. Its also a good shield for the driver when going through buck brush. I had to do some customization on the braces and its rock solid. It drives well and I like it.
(I love a project where I get to use the Grinder and the Dremel! )
Brace is bolted into the gunnel.