RedactedNarrative: Operator was traveling south pulling up to Port Edward Restaurant piers.  As he made approach he heard a "clunk" in the propeller area then the engine stalled.  Several attempts were made to restart the engine as the boat drifted south toward the Algonquin Dam.  Approximately 100 yards, the boat canopy struck the underside of the Route 62 bridge and became lodged under the bridge.  The operator tied a rope to the beams under the bridge to avoid going over the dam.  Algonquin Fire rescued the operator, passenger and a dog.  Upon inspection of the boat, a tow type rope was found wrapped tightly around the prop which would have caused it not to start.  There was also a short piece of frayed rope similar to the previous that was around the prop attached to a rear cleat close to the propeller.