The operator had no experience operating this boat and minimal experience operating any boat.  He made two turns and on the second turn he fell backward out of the boat.  The operator stated to me that the boat kept running and turned back toward him while he was in the water.  The propeller struck his upper left arm as it went by him.  He sustained a pretty substantial cut and was transported to the hospital.
 
He was pulled out of the water by some friends who were in another boat.  The boat that the operator was driving was a tiller driven open style boat.
Lyman