but guess who has forgotten to tilt engine before setting off, despite both us checking all was sorted
Looking at the picture i wonder if this is what happened in this case, the skeg of the engine caught the road at speed and dragged the boat off the trailer?
As others have said its a good lesson to all. I for one always double check everything, the one time I didn't I had left my jockey wheel down and wrote that off (lesson was learnt then:face palm!!
I have two securings on the rear, the winch and a further vertical tie down off the front eye, and it never moves an inch, which is handy when Im coin a 600 mile trip down into france
!! 
