This post was just intended to be a quick update. I have been taking pictures along the way in preparation for a future comprehensive Moby post, perhaps a "how to". So far, I have fiberglass-reinforced 1/4" poplar, drawn a new and enlarged moby template, cut out all the pieces, and cut off the old mobies and cleaned up the hatch lids. This evening, I glued the mobie components together with thickened epoxy and added another layer of glass to the underside of the hatch lids.
In the meantime, here are a couple of pictures from when I made the Mobies, Mark I.
Partially assembled pieces.