Bought a Gelert 10cm Sim for my first camping trip and tested it out for one night recently. Woke up aching all over. It's a bit hard and narrow and I just couldn't get comfortable. Wondered whether it might be worth buying a memory foam topper to make it more comfortable, but I'm not sure whether you can use them in tents as surely lots of people would do this?!
Also, thinking about maybe attaching 2 sims together, but not sure if it would work as the Gelert slopes down on the edges. How would I go about it? If I put a sheet over the top, surely the sims will just slip away from each other? Could I fashion something out of velcro and/or duck tape?