The tabs where made with a fold over at one end this was then divided into two pockets with a row of stitching and a magnet sewn in each pocket,the row of white stitching is a marker for where to fix it on the insulation.The stitching is not level because i needed two and a half inches of tab above the insulation which slants to match the batwing,
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If you dont mind velcro and studs on the dandy it could be fixed all round but ime trying not to make fixing and changes,it goes below the beds and wraps under with the side pvc so any condensation if it does form on the pvc can not get inside the dandy.
mike