I laid down some twaron roving. One inch apart. Held in place with some masking tape. Then mixed up some epoxy, fast cure. Then with a small throw away brush, wet the roving.
Think of the skin as a sandwich. First layer of cloth, then the twaron/ micro balloon bulker, then the top fabric. The thicker the stronger. And the thicker, without adding weight, is better still. Then on top, think about the twaron like rebar in a concrete slab. It holds the elastic nylon and epoxy from stretching and tearing.
I don’t know what the blazes is going on here, but I like it.
Just to confirm, was this out of a snapped blank? Did you glue in a new stringer? How did the blank snap?