So.... I have disc problems in my back which has meant sleeping on my campbed has become tricky as can't sleep on my back, need to sleep on my side and I find the metal frame is uncomfortable when I bend my legs up. Have been considering a SIM on top of campbed - has anyone done this and if so is it enough padding to mean you can side sleep and get legs onto the metal bar without discomfort? Last time we camped I went back to an airbed as it meant I could sleep on my side but they are such a pain to put up and cold. Would like to return to my campbed but sleeping flat on back is just no longer an option! Camping this weekend and looking for advice :)