Don:
Was this a weekday when that happened? Maybe someone at one of the River Camps saw something. Might not hurt to talk to anyone that lives down there. Not sure if they live in those river camps year round or just during the summer months. I know people that have camps down by the Dogtown ramp. I use to work with two of those guys a few years ago. They have some really nice camps down there complete with boat docks.

Regards,

Moose1am