I have used a chock before when I had to load/unload my boat by myself and I had a truck with manual transmission. The problem I always had was when the truck had rolled back a little against the chock it was impossible to remove it without pulling the truck up a little, and then I had to get out after pulling the truck up and pick the chock up while the truck is setting there with just the park brake holding. After some redneck engineering, I came up with an idea of tying the rope from the chock to the bed pocket and just dragging the chock along side the truck until I was on flat ground. Before this great idea I had to asked strangers to help pull the chock out from the wheel after you pull up a little and throwing it in the bed of the truck, you will get some very weird looks when you ask someone you dont know to--pull your chock.
