We had a great day out to Yellowstone with Duane.
He was smart, funny, a great storyteller - everything you want in a guide.
Never having been to the Park before, I was worried that we'd be rushed going from one location to another but Duane had a very clear itinerary planned and allowed us a nice amount of time at each spot.
He also was very skilled at spotting wildlife and giving us time to view.
It was a (long) great day and I highly recommend.