If your needing a passenger backrest after you slot your trunk for easy removal, here is a pic of what someone else did. He did an awesome fab and chrome job on these brackets.

Here is a pic of my 97 Valk with the stinger seat on it. Haven't been on a long ride with it yet but I like the look.

For riding double I throw on this different Corbin seat that has a socket in the back of it for plugging in a removble backrest. On my Interstate I put on the Std/Tourer fender rails and use the Hondaline backrest but of course it is a major deal to put the trunk back on which I haven't missed yet but I am sure I will eventually have to do the "Quick Change " slots in the trunk rails like you are considering.
