don't forget other tips like buring the body vertically, digging greater than six feet, and burying a small animal's corpse above the corpse you're trying to hide

And always remember, kids, disposing of a corpse by weighing it down in water only works in places with crabs.

BlastingNaba said:

And always remember, kids, disposing of a corpse by weighing it down in water only works in places with crabs.

Or crayfish.
Also remember kids, if you want to weigh a body to prevent it from floating, it's best if you slice open the guts, score the limbs and tie the weight to the legs and the arms instead of filling the guts with it! Since it's already dead, there would be minimal splatter; scoring the limbs and slicing the gut provides entry point of which creatures can start eating, and thus quickening the time it will vanish. Tying the weight to the limbs will also help the corpse settle better at the bottom compared to weighing it by filling it with rocks (limbs will float) or cementing the legs (profile will stand out when divers search due to verticality).

Source: Postmortem murder case files.

Thanks. This is all very useful information

Note to self: don't eat crayfish sourced from around N'Orleans.