Originally Posted by Tunce the traveler
If you do a search you'll find a few lists but I do not have one for you. #1 is to level side to side and #2 is the most important ( CHOCK the WHEELS) because if you unhook it 2nd it just might roll and end up a disaster with you in the middle.
Yep, did this years ago on our maiden voyage with our first RV. It was a pop up. We arrived at the site, leveled the pop up and then proceeded to crank the tongue up without the wheel chocks in place. As the ball decoupled the trailer rolled away from the tow vehicle until the safety chains stopped it. Fortunately the chains were still attached as there were people directly in the path over in the adjacent site. Lesson learned - don't disconnect safety chains until trailer is decoupled. Fortunately the trailer rolled away and not towards the tow vehicle. I've never forgotten to chock the wheels since.