Thaks for the help.
With the Protac in place then, how awkward is it to get on and off the bike? I'm not as flexible as I used to be, and I can see myself landing on my a$$ trying to step back from the bike and drag my right leg across the seat as I dismount.
The Utopia backrest sounds interesting, but the seat on the 2011 is a single, solid piece, so I'd have to cut out the opening for the bracket. Even assuming I'm competent enough not to mess that up, is it easy to raise the backrest into place once you're on the bike and lower it before you get off so you can just swing you leg over the seat like usual?