Landing Decision
The pilot decided to land on a gravel bar. He performed a touch-and-go landing, then returned for a full stop landing.
Go-Around Attempt
During the landing, the pilot determined there was insufficient room to stop. He applied full power to initiate a go-around and saw a log in the takeoff path. The aircraft lifted off the gravel bar, and the pilot pulled the yoke aft to clear the log.
Impact Sequence
The landing gear cleared the log, but the tail struck it. The nose pitched down, and the nosewheel struck the ground hard. Subsequently, the aircraft bounced about four times.
Outcome
The aircraft then encountered about two feet of water in the river and turned over.