Our family of 6 did a full day tour with Chadd and it was well worth it. From the time we booked the tour to the time of the tour he was coordinating with us the best time to meet to help increase our chances to see wildlife.
We saw amazing scenery including elk (too many to count), moose (14 including a pair of recently born twins), big horn sheep, coyotes, numerous varieties of birds (including a pair of ptarmigans), waterfalls, and a number of smaller animals.
He was very knowledgeable regarding the wildlife, the mountains, flowers and the area. He even recommended other activities and restaurants we should visit.
He was all around very helpful. He even helped others spot the wildlife that we were seeing and they couldn't.
I would definitely recommend going on Chadd's tour.