I guarantee they live between the dump site and your house. Closer to the dump site. If you think about it, you wouldn't drive it far with the back cut out. You would never drive toward where you stole it from.
I would say that they live within a block of you and they dumped it within a block of where they stripped it. Thieves are lazy, and scared!
Has anyone "just dropped by" lately? Maybe to check out the boat.
If you think you have found them and need some back up, I am down! I have had shit stolen three times, on two of them I got arrests. One was a minor and didn't serve any time, but I got the cash value of my stuff. The second got 366 days.
If you have a hunch on who it may be, go with it. I was right with each of my three.