Under the playpen there's not a whole lot of room for storage. Unless you have some small flat things. I have a couple smaller ballast bags rolled up and a hand pump stashed up there. Sometimes we stuff folding chairs in there if we're beach camping.

I'd vote to just enclose it with a hard tank under the cushions! Keep the basement locker though. Maybe keep a small compartment up front for ropes/anchor.

Come on RickT - 2016 Mojo with Playpen?

Trayson can plan to pick one up around 2020.