I'm looking for some help for my older brother

[GRANDPA TATER]

I was talking to my older brother at Christmas. Dan (who is 73) has always enjoyed floating Ozark streams in jonboats. He said he hasn't been able to do that the last few years because all of the outfitters that he used in the past have quit the business. We grew up floating on the Bourbeuse near our farm. His favorite stream to float is the Big Piney but he has enjoyed floating the Jacks Fork, Gasconade, Current, Big River, etc.
My question is do you know of any livery services on any of the Ozark streams who use jonboats? Dan said they usually go to a put in spot and meet the service there, and the service transports their vehicles to a take out place. But they'd be willing to be flexible on the plan.
Any help is appreciated. As Dan said he's not sure how many more years he and his friends have to do this and wants to get one in this year.
Thanks!
Tater