Auto body repair & detailing: Repair crack in fiberglass car hood, sportsman class, fiberglass car

Question
Best product to use.  Heat resistant and flexible. What to apply on top surface and what to use underneath. (MAT, cloth, etc.)  Oval track sportsman class.

Answer
I prefer matting for this type of use and I have also had good luck by cutting the matt into 1 in. pieces and mixing it into Vette panel adhesive.Matting is more for structural repairs {underneath} where cloth is more for the cosmedics {visible areas},it will help hold the cracks together and still be able to be finished nicely.As far as brands of resins,pretty much any brand is O.K.