Paul,

I don't know that the Ouachita River has a long enough continuously
floatable section for a 3 day trip. I'm only familar with a couple of
widely separated sections of the Ouachita. If not the Ouachita, you
might want to try the Buffalo River in northern Arkansas. It would be
perfect for your trip with probably even better scenery (but the
scenery on the Ouachita is great too). For some good information on
either river and many others in Arkansas, I'd suggest that you post
your questions on the Arkansas Canoe Club webpage --
www.arkansascanoeclub.com You'll probably get lots of answers there
rather quickly. As far as renting the canoe and shuttling your
vehicle, there are outfitters on both the Ouachita and the Buffalo
that regularly provide that service. Ask about those on the message
board or check the commercial members section of the ACC webpage.
Hope this helps! Whatever you do, you'll have fun!

Kim