Question about adding poop board

[The chicken nurd]

I finished my new coop a few months ago and now am realizing it might be nice to add a poop board to keep the coop a little cleaner any suggestions on how to do that
(Picture of roost below)

 

[Sally PB]

With that roost arrangement, a poop hammock might work better.
https://www.backyardchickens.com/threads/new-coop-edition-is-working-great.1396703/#post-22921710