I think it might "just fit." Could I ask you to look at this installation video to see if you see any issues with this being so close to the slide out hinge?
http://blueox.com/show-4-video.aspx (3rd video down on that page)
In listening, they say to measure 29 inches from the center of the ball hitch to mount the center of the bracket that gets installed. It looks like the bracket extends another 2.5 inches from its center point back towards the TM hitch mount. One then needs to be able to turn the chain holder and it looks like it extends at least another inch beyond the mounting bracket. So, if I do my math right, I need at least 33 inches from the center of the ball back to the hitch bracket. So, how far back is the leading edge of the slide bracket from the center of the ball I guess is the operative question? Thanks so much for your help.