Yo Sti - the 'schutes water level is mostly a tail water and you might want to research water levels. When up, it is wild'n wooly, but in summertime, although you can't easily wade across (if at all), there are quite fishable areas, such at Warm Springs. The trouts are native redsides and about the strongest in the Lower 48, even putting Delaware bows and the Rockies to shame.
The Maupin fly show is owned by a guy who was originally from PA.
Although the lower water has a road down the bank, left over from the railroad wars, I wouldn't drive it in a car with normal tires. The sharp volcanic stone, goatheads, are notorious for puncturing tires. The local car repair places do dozens of tire repairs a day.
The trips promoted by the outfitters (and Kaufmann in their heyday) are the multiday floats down the canyon, and those are experiences that should be on everyone's bucket list.