I do turn the cushions over but the caravan is 7 years old and it is possible that the springs in the cushions may be slightly worn, I have only had it recently.
We do use a quilt and a topper, maybe my back is too sensitive, it would be a shame to dump the caravan just because of the sleeping arrangements I confess to enjoying myself when I have used it.
I am going to try and stiffen up the slats, but cannot sleep on it before I use it to go away.
Thanks