tlea
You might want to contact a small national organization which specializes in outdoor hunting/fishing events such as you propose. They may or may not already have resources in the Yellowstone area .The organization is : DreamCatchersUSA.org
There is an application process that is located on their website at:
<< [url=http://www.dreamcatchersusa.org/:9d49f]http://www.dreamcatchersusa.org/[/url:9d49f] >>
Perhaps they can assist you, as they have numerous contacts within the sporting community.