Now see, I've always thought that the best way, would be to go rent a boat out, and rent a wood chipper, and basically use one of those mini generators to put the guy in feet first and push him in maybe 6 inches or so every mile.

That way, the stuff flying out of the wood chipper, would be eaten up by the fish in the lake, and there would be no evidence to find. Sure, you'd need to drive quite a ways, because 6 inches every mile or so is a lot of miles, but, that small of an amount of flesh / bone, would be eaten by fish of all sorts, and then, you take the wood chipper to a car wash to get the obvious stuff cleaned off, then, soak some huge logs in Bleach, and run those through for a day or two, and once you were done, there wouldn't be any DNA evidence left, because Bleach soaked wood, would destroy it.

Not that I've thought this over a whole lot or anything of course...