I wish I had read this before I watched and then deleted it. Maybe I saw you, not sure. In a interview with Levi, he said you have to be able to descend as well. Good for you for being able to do it. I'm not sure I will able to be good at it, but then I don't have to much chance to work on it either. I remember 16 years ago vacationing in Colorado. I did not take to the altitude well and I don't like heights either, but I still loved it and want to go back. Hopefully, in 2015 or 2016. I want my boys to be old enough to really remember the trip. They are only 4 & 6 right now.