This is the man! He zig-zagged our boat the whole way to stay in the deepest parts of the river. We still scraped bottom a couple of times, only once was he phased by it. Probably because instead of just scraping the middle bottom of the boat on the bottom of the river bed, we scraped the right side on a large hidden boulder, making the whole boat cant pretty sharply to the left. When i looked back at him, he just nodded and laughed.