There are many places in the world where you cannot get 100 feet. Where I live in Colorado, we have no such place in reasonable distance. There is a site about 6-7 hours away in Utah where we can get to 65 feet. There is a place in New Mexico another 6-7 hours away where you can get to 85 feet if you hold your computer down in a depression. There is another place in New Mexico where you can get all the way to 276 (the deepest I have found there so far), but you cannot get entry to it unless you already have AOW.I wish it would be required to 100 feet, as that's the assumption of AOW certification. Completely agree on additional skills.