Oh, hello! Thanks so much for your reply and your advise!!! I will try this flushing the engine etc. I had a friend who is a helicopter mechanic look at it today, and we inspected the impeller and housing and the shaft for damage. There is very minimal damage only to the blades, and certainly nothing visible that would cause the loss of propulsion, and the loud noise with vibration. We started the motor and ran it very briefly and it sounds fine and runs fine. I will flush it and take it to the water to turn it 360 degrees. Thanks so much!!! My bf is on a trip right now, I just hope I can fix it before he comes back and finds out!!! 
sounds like a new impeller and housing are around $6-700 and then there's the mechanic's fee also. Expensive day at the beach!! I hope it's an easy fix. And I promise to never ever ever run into a sand bar again!!
sounds like a new impeller and housing are around $6-700 and then there's the mechanic's fee also. Expensive day at the beach!! I hope it's an easy fix. And I promise to never ever ever run into a sand bar again!!
