Quote Originally Posted by mmandley View Post
Backing it up wont be an issues, chock the wheels and you should be able to unhook it. The problem you will have is when your backing up, it compresses the tongue for the brakes, and when you try to unhook it the tongue wants to go forward to its nuetral position.
Those are very handy photos!

The problem of the tongue decompressing, or just any small downhill trailer movement, can be avoided by chocking the wheels and then putting the truck into neutral and letting it drift downhill a few inches. Then drop the trailer's front wheel and raise the tongue. This is also a safety test, as it confirms that the chocks are going to stop the boat as you intend.

At my home with essentially level driveway where the boat parks, but a few slight valleys in the surface, I put the truck in neutral and let the truck/trailer drift where they want before using chocks. This minimises any trailer drift and tension at the ball when unhooking.