RedactedNarrative: Subject was preparing his boat for docking (about 100 yards from the boat ramp) by tying lines to the cleats on the front of his boat and adjusting his trolling motor when he lost his balance and fell overboard.  He was not wearing a PFD and had a recent shoulder surgery, so he struggled to tread water.  He yelled for help and another boat with 2 bystanders came to his rescue.  The good Samaritans were unable to lift Subject into their boat, but were able to call 911 and navigate their boat to the boat ramp with Subject by holding onto his arm.  James City EMS arrived on scene first, assessed Subject under their drowning protocol, and transported him to Riverside Medical Center via helicopter.  Subject had no injuries, but was kept for observation.  There was no damage to Subject's boat.