Why would you have to get rid of the passenger seat?
Here's what I have:
It doesn't impede too much on the passengers comfort. The passenger or driver can easily use it by rotating the arm. I'm very impressed with the tough tray however the universal mount is a little bulky looking. If you could use the jeniko mount with a custom bracket to use factory seat holes (seen somewhere here on mud) then use the ram tough tray instead of velcro with jeniko's mount. I don't like using velcro.
I can get a picture of the legs if you want...