Kayaking the Buffalo River in Arkansas sounded interesting, but every company I ran across only offers shuttle service with your personal vehicle. In other words, someone drives your vehicle down to the take out point. That's just weird to me. Every other shuttle we've ever used transports you in a van or bus back to the starting point (or up to the start point for you to run back down). Your personal vehicle stays parked in the lot the entire trip.
Maybe I'm just not that trusting, but on a road trip where all of our belongings are in our personal vehicle, I'm not handing the keys over to someone else for a joy ride.
So, I guess I'll check that activity off the to-do list...