Well, Amaral does seem rather fond of freezers...
So let's see... PF's "Smithman" carries the body down to the beach and luckily remembered a perfect hiding place from the previous day (or whenever they'd gone down for a walk and an ice cream). So perfect in fact that the GNR, volunteer searchers and the media posse never noticed it.
After a long day at the police station and with the media following their every move, "Smithman" 's plan is to stroll down to the beach with a suitcase / bag and put the now decomposing remains in it and carry it away. No one notices him doing that, either. Let's say that that takes it up to Saturday, when some reporter saw him leaving with a bag / suitcase and a toy bucket and spade.
Then what? Idea! Off to ask around the village if anyone has a working freezer big enough to hold a suitcase. Perhaps by this time, they'd gone off to buy some thick big black gravel bags and a saw (which no one found odd). Some unsuspecting soul who didn't know Smithman from Adam offers them keys to their large domestic (or commercial) freezer, that they hardly ever happened to use, but kept running anyway. Smithman promises that the suitcase will be removed in a month or so, just as soon as they hire a car and can escape from the ever-waiting paparazzi.
Amazingly, no one saw a thing. And Eddie, who'd gone sniffing all around the beach, never noticed anything, either.
Just how plausible is that?