I did it just for this post. All I did was what I just said. I stand on the wall/fence with my bridge in storage. Have Item Display Preview active and put the bridge where I liked it, selected place (since putting down by hitting X doesn't work with purple lights) and it appears there. I rotated it switching from controller to mouse and keyboard and was done. Maybe try with the item not exactly ON the fence but maybe ever so slightly outside of your fence.
Edit: that's the closest I can get it to for now. Close enough I think.
https://img2.finalfantasyxiv.com/acc...abb88e22c6.jpg
