Originally Posted by OldCoot
Bal X Chocks or equivalent on both wheels before unhooking. Make sure they are tightened securely and for added security, block in front of the tires.
Actually, the X-chocks instructions clearly advise against engaging until after you have chocked and leveled the trailer. This isn't nearly as important on level ground as it is on an extreme slope like you are talking about.
-Back into driveway
-Chock the downhill side of both rear tires (chocks between the tires so they won't get accidently bumped)
-Vehicle in neutral, and let the trailer roll onto the chocks. This is important. If you jack up the dolly without doing this step, the trailer could suddenly roll forward off the ball a few inches, crushing your bumper and any fingers, etc between them. This could also put a lot of fore/aft-loading on the dolly-jack, which is not good. You want the trailer completely in position before you start lifting the coupler.
-Vehicle in park
. Disengage WDH as usual.
-Unlock coupler and raise off of the ball. If it won't disengage (vehicle a little too far forward), raise rear of tow vehicle a good bit, then stand/bounce on bumper. If still won't disengage, reverse vehicle slightly.
When hitching back up, just remember that the weight of the trailer is on the chocks. You will need to back up a few inches to get the chocks out. Be careful not to hit your garage. (Ask me how I know....)