Thanks Larry - good to know it can be done. After the dynaliner install I procured some snake bite pattern vinyl from Alpa which is exactly the original roof vinyl . I secured the vinyl with spray adhesive to a carefully cut piece of corflute plastic which was then arched in tight under the the foam covering the roof . The edges were then secured with the trims . It has not moved . But it is removable if I wanted to run a wire.
It also performs well in heat and it is really light.