I don't think you're supposed to park your boat there, a photo by ricmcarthur on Flickr.
This happened last year about 3 miles from the cottage.
The driver made a right hand turn about 2 miles too soon. The shore does make a right angle turn much further on.
Surprisingly alcohol was not a factor and no one was hurt.
When they towed the boat off the beach, the motors started and they drove the boat away.
A friend sent me the photo.