Making Foldable Beds more comfortable in Hybrid Trailers

My wife and I use an 8" thick air mattress under the factory mattress. Once that's inflated fully it's very comfortable. We do lose some headroom, but neither of us mind as we don't normally sit up in bed. It's nice having the fold out sofa to the right of the bunk end (ROO 233S) so we can use it to step up and get into bed.