I can't outdo Lzsch's review of Chantze as the Yo Yo Ma and Tiger Woods of the river, but I can confirm the truth of the statement. Chantze expertly guided our boat through class III and class IV rapids for a fun and exciting day with the family. It was an adrenaline pumping experience, but because of Chantze, we all felt safe and in good hands. He was also very knowledgeable on the history and geology of the river and we learned lots. I was worried about having all the right clothing to stay warm on our 52 degree day in March, but Chantze came prepared with rain pants, jackets and wetsuits for all, so we were well taken care of and comfortable. And lastly, I have to mention the amazing lunch. Not that you rate a rafting trip on the quality of the lunch, but seriously, this was amazing! Freshly prepared and assembled by Chantze on the river, we had fresh greens and chicken in a delicious thai peanut sauce in spinach wraps. The last rafting trip I was on (not with Navtec) we had PB & J - so really a step up.