Roll away nest box floor

[itsalladream]

I'm just about finished building my coop, and am trying to decide what to use for the floor of my rollaway nest box. I was going to use that green outdoor carpet, but am thinking it might not have enough pitch to roll away. The floor has an 11° drop. I was thinking of using foam play squares, something like in the link below. Thoughts? Thanks!
https://www.amazon.com/BalanceFrom-Puzzle-Exercise-Interlocking-Tiles/dp/B013A4ATCQ/

 

[Hokum Coco]

rollaway nest box.

Here is one take on your project.