Hi Jod
I considered ordering the slatted platform from Swallow or possibly trying to make something similar but in the end decided against either option.
My concern was that the slats would work fine when we were lying down in our sleeping bags, but might flex too much to stay in place if we were kneeling or shuffling around on the platform and had our weight on just one or two of the slats.
I've never actually seen one of the slatted platforms so don't know whether this is a serious concern but I decided to make a solid platform of 18mm plywood.
Cut to size and then routed to round the edges, it was very simple to make. It's 3 years old and is lasting well. We're careful not to stand on it but sitting or kneeling on a single section seems fine.
Made up of 7 sections. It's quite heavy but stows away fairly well in the cuddy during the day.
When the cockpit tent is up we often put down just two sections in the stern to create a larger area to cook on.
