Great article - I upvoted you with a tip. You might also be interested in my article i just published a few days ago on the Grand canyon and how to pick a white water rafting expedition provider - I went for a week rafting the Grand Canyon and it was absolutely the most spectacular trip I've ever done. https://steemit.com/adventure/@katythompson/my-trip-of-a-lifetime-grand-canyon-rafting-week-and-how-to-choose-an-operator