Seeing Aaron carry Mikey in the backpack reminded me of Kronk carrying Yzma in the Emporer's New Groove. Can you see the resemblance?

Aaron still thinks it's great-- it is not as hard on his back as the bjorn, and Mikey enjoys the view from his chariot. I think they also like the attention and smiles they get from other people on the trail.
Today we went on a 7 mile hike at the Silver Falls State Park where we saw several gorgeous waterfalls. The trail led us through mossy caverns behind the falls' curtains. Mikey was a good sport until the last two miles. He demanded out of the backpack and Aaron ended up carrying the boy in his arms the rest of the way.