yeah go get fiberglass and start repairing.
anything with fiberglass get's stronger when you repair it.
that's just how it is with fiberglasss kits..
they have no give to them.. they break easy.... gotta be gentle, and you gotta be willing to work with fiberglass.
lay fiberglass on the front and back. you gotta sand down the primer where you are gonna lay the fiberglass down. after you lay down the fiberglass sand it smooth. use like 2 layers of fiberglass then put bondo on top of it, and smooth it out, keep going up in grit and finally should be smooth.
make first layer of fiberglass out of matt, and then use cloth for the second layer.
2 layers front and 2 layers behind.