Your reply caused me to do some additional research. If SMF is what the hood insert is made of then fiberglass resin should work. Researching SMF I found that it is Syntethetic Mineral Fibers, i.e. fiberglass, rockwool and other materials. I tried to find if there was a special resin but I can't seem to find any. I worked with different types of fiberglass in the past and used the same resins. There are some resins that are for harder final products, whitewater resin comes to mind. I am not sure what the jet ski person was talking about. There is a different method that Chevy uses on Corvette bodies but they can still be repaired with regular fiberglass resin and any number of SMF materials. I am still wondering it there is something that is done differently for the top surface. I don't see any reason that an epoxy of any type could be used to fix the crack from the top and a normal resin could be used to strengthen the back. The only thing is that both resin and "epoxy" are both two part epoxies. I am not trying to argue and I would really like to know if I am not taking something into account.