You must have a deep pan of PDZ?
I use thin layer and yes, juicy poops will freeze and stick, and yes they can go flying but never into my face.
It's 1/2" thick and runny poop will still freeze to the bottom sometimes. I just leave that until it thaws.
I use a round rake so no matter what angle the handle is the dept remains the same and you can get right into corners with it.
JT
We have lots of sand available so I think I'm going to start with a thin layer of that on the board and see how it goes.