We had similar issues with our previous van. In the end we purchased a piece of the thick memory type foam to fit exactly an top of the made up cushions, it worked a treat, although it was a pain to roll up and store.We got it through one of the sites advirtising on the net. if you decide to have a go at using the memory foam, shop around as the prices vary enormously.
A day of all things motorhome and campervan. The show is held both in the main indoor arena and across the grounds. Catering, hot drinks and food options are available. Easy access to the site and free parking included. Win one of five pairs of day tickets