BEDDING ISSUES FOR SYMBOL

My wife & I are just back from a 25 day epic all over Scotland...and in SUNSHINE  virtually the whole time...most unusual!
This is only our 3rd outing in our 'van since we got it last year and we do love it  but putting a mattress protector then a sheet with elasticated corners on both is a real pain...   Is there an easier way to do this that's not too bulky to store in the over cab area? We wondered about a thin foam topper with a cover that just sits on the bed without the hassle of elastic retainers?
I know this would take up more space but not sure just how much 

Appreciate any thoughts!

Cheers
John

We use 1" thick toppers in cotton covers and two double duvets....one under and one over.
If we choose two singles, the same double duvets are used. One to each bunk folded to give half under and half over.
The bed(s) make-up takes two minutes.
Keith

We use the single beds and sleep using a good sleeping bag each in a duvet cover. When not in use we roll them up and put them in a bag and use them as back rests either end of the sofa. BUSBY65

Duvalays highly recommended,

We have the same model and find it very comfortable. We use the double bed option with a 2" king size memory foam topper which is enclosed in its own cotton cover. We bought it from Aldi for about £25. It is rolled up and kept in its rolled state with a quick-release strap and is stored beneath the wardrobe. We then use a normal domestic king size sheet to cover it and our king size duvet which fits, along with pillows and sheet in the overcab locker - it's a bit of a squeeze but easy with practice! Making the bed is quite easy and we don't use any elasticated straps etc to hold things in place.
John

We have a 2000 Symbol.  After a 3 week trip to Scotland 3 years ago I found sleeping on the double bed not the most comfortable.  After some research I purchased a piece of 66 x 27 x 2 inch piece of memory memory foam. I have put the memory foam in a single bed duvet, which is easily recoverable for washing.  When travelling the memory foam is rolled up, (2 suitcase straps to keep it tight) and stored in the toliet/shower room.  My wife has not found sleeping on the bed as uncomfortable as myself and uses an reclining chair cover for extra comfort. I bought the memory foam off Ebay for £27.