I had a call from a friend that has done that hunt twice- once himself and once as helper. Sounds like this late season deal might turn out to be something of a free for all, with many of the tag holders enlisting armies of spotters. Of course they would be rifle hunting.
His thoughts are that if my name came up for this bonus hunt I may be getting close to drawing a regular tag, and said that if it were him, he would wait.
The information that came with the letter said this is a low success hunt, with horses highly recommended, and that most bison on the late hunts are taken more than 5 miles from the nearest road. It sounds like it might require a serious outfitted hunt to have much of a chance.
I am waiting on more info as to tag numbers for this hunt, etc. But my goal would be a quality experience, ideally DIY, and this might not be it. Lots of research to do in a very short amount of time.