We have guys who bow hunt, but most "charity hunt " stands are set up for rifle. We allow folks to bring ground blinds, climbers if they want. They usually end up in a stand with a rifle or put their ground blind on a food plot. Just not enough time to scout for bow spots late season( mid January) on 3 day hunt. When I guided, I had to have the hunter attend a couple years before I would trust them in a climber.
Have not heard of any bow hunt only charity events.