Opie,
I also have a storage/sleeping platform where I strap down an ARB 50ltr fridge. Rather than go for the more expensive offerings shown I simply went with a Square
U-Bolts (pic below) on each end of the fridge which I can use as an ratchet strap anchor point for a lot less money and IMHO just as effective since they drop down when not in use and can be raised up when needed.
I also use a ThermaRest inflatable mattress when sleeping back there so they don't end up digging into my back.
If you're not strapping down something like a fridge you can probably also just put them on all 4 sides of your platform so they're even more out of your way.
Square U-Bolt
Square U-Bolt can just be seen on left side of platform in the pic below.