We never made it to Nevilles Arch. Theres always next month! Too many side canyons and ruins to explore. We try to cover an area thouroughly with the boys on one side of the canyon and my wife and I on the other. With radios to direct each other to interesting places to investigate. We were able to spot several alcoves that weren't visible from below.
Its always amazing how big the canyons really are, and how long it takes to get over one.