I'm looking for ideas to improve the comfort of the standard Aliner Sofa Bed. Last winter/spring we left the sofa bed setup as a bed for a couple long trips and replaced the cushions with a queen size air mattress which worked pretty well, but we didn't like having to climb over each other if/when we had to getup in the middle of the night. The fact that it was an air mattress probably made this more cumbersome. I'd rather not give up the 'couch' aspect of it and convert it to a full-time bed with a real mattress like some folks. Last time out my wife slept on the dinette bed and I slept on the couch (just partially pulled out) with sleeping bag and sleeping bag sized air mattress, which seemed to be OK for both of us, but I'm still seeking ideas for improvements. I'm considering upgrading the foam in the sofa cushions to improve comfort for both sleeping and sitting, which might prevent me from having to use an air mattress - but would like some more ideas. (For those unfamiliar with the setup, the typical king/queen size topper that many standard popup owners do will not work since the bed is easily converted to couch daily - and there is no place to store a full size topper.) Ideas?