X 2 on the checklist, I had one on the back of my boat and used it most of the time. I have made all the mistakes as well. Except for having the boat fall off the trailer.
I just returned from a work trip, and was very excited to see this post. I love the methods used to transfer, it's a great adaptation of a bed transfer device! I will show this to my wife when she gets home.
Well done team!!!