are there any driver backrests for the 2009 voyager &/or for another bike that may fit the stock seat of this bike.

 

Not sure man. Maybe your 130lb woman on the back for a backrest. Otherwise, I am not sure. Good luck

 

dgusek, you might try Sargent or Corbin, check out the Vendor Directory (to the right of this column) or even go to Dennis Kirk, Iron Pony, or other online moto suppliers. There's got to be one somewhere. (May require some creativity to retain your stock seat, though.)
Backrests are a mixed bag. They're great as long as they don't impede a hasty "off" if your bike goes down. But, if you log the miles, they can certainly enable extra distance between lower back cramps.
Good luck. Let us know what you find.