I have a sub 5lb stringerless EPS epoxy I snapped a while back. Hauled the bits down from the rafters for a spring project. Even with the repair it should come out reasonable weight.
Having snapped about 4 of these stringerless things (even when they are compsands) I'm thinking of routing out a stringer slot from the top deck and then dropping a stringer in. It will run to 6" from nose and tail.
I'll CNC cut the stringer to fit. I did this on my last construction and glued the stringer into the shaped blank after wire cutting it in half. Worked out pretty well.
I'll use a rocker table to get the rocker right on the repair, then glass a layer of tape over the stringer and bandage the snap.
Suggestions: do I go all the way to the bottom glass or should I leave a little layer of EPS?
Any other thoughts?