Oops. Don't unhook boat on unlevel ground.
Stop at Walmart for spray paint. Got back outside to truck and and older man had parked a few slots up,from me. He had a nice SUVA and Champion bass boat. He was cranking the jack up and had unhooked the trailer from ball. Oh and the parking lot isn't level. Boat rolled back a few inches to end of safety chains. He looked at boat and pulled on trailer to get safety chains off of vehicle. Let go of trailer and it started doing a slow roll backwards. Should have blocked trailer wheels. He grabs ahold of trailer and stops,it from rolling. Then let's go again and then it starts slow,rolling again. He proceeds to,take the hitch off of the vehicle while boat is doing a slow roll backwards. If it hadn't been for a cart pusher right there and seeing what was happening and grabbing the trailer it would have rolled and hit cars in the other aisle. Full moon time to get out of town, lol