Vessel was traveling in Mobile Bay near Fly Creek.  Vessel had two persons on board and was towing three persons on a tube.  The operator was under the age of fourteen and had no experience operating a vessel.  As the vessel was making a circle, the operator was unable to control the throttle.  The operator lost control of the vessel and drove over the top of the persons on the tube.  The lower unit (propeller) grabbed one of the tube riders and tangled in his shorts. He became trapped in the propeller and his shorts acted like a tourniquet.  Family members were called to assist and were able to cut the victim out of the propeller.  He was transported to Thomas Hospital in Fairhope and treated for non-life threatening injuries. 
Vessel overloaded based on capacity plate for vessel based
on number of people in boat plus tube contributing to instability of the vessel
Fairhope