Huh.. you run along side the rivers, and look on sand bars ?
I live close to the Kansas River ... heck I live really close to the confluence of the Kansas and Missouri Rivers - Lewis & Clark camped there, and that spot is a park now.
I've talked to a fellow at the KC Gem and Mineral show a couple of times that floats the Kaw and finds an amazing amount of items. He's mostly looking for bones and has found mammoth tusks, buffalo skulls and even a musk ox skull (how long since they roamed Kansas?)... lots and lots of ancient bones but he had quite a few points, several paleo. He finally bought an airboat like they use in swamps since the river is so shallow and sandy. When he would set up at the show he would have an entire room for his display and have videos of his finds. I asked him how often he found something and he told me that he makes finds every time.
