I used to fill up 3 gaylords of cans (which was the most I could fit on my truck with the tailgate down and find a reasonably private place (cul-de-sacs with no houses where new subdivisions are being built are great) and dump them out and just drive my truck in circles over them. It works great and is fairly quick. A snow shovel puts them back in the gaylord.

Usually even if anyone shows up they tend not to care too much.